diff --git a/packages/frontend/assets/room/objects/tabletop-flag/tabletop-flag.blend b/packages/frontend/assets/room/objects/tabletop-flag/tabletop-flag.blend
new file mode 100644
index 0000000000..160e1d3223
Binary files /dev/null and b/packages/frontend/assets/room/objects/tabletop-flag/tabletop-flag.blend differ
diff --git a/packages/frontend/assets/room/objects/tabletop-flag/tabletop-flag.glb b/packages/frontend/assets/room/objects/tabletop-flag/tabletop-flag.glb
new file mode 100644
index 0000000000..1c8cfaf9ef
Binary files /dev/null and b/packages/frontend/assets/room/objects/tabletop-flag/tabletop-flag.glb differ
diff --git a/packages/frontend/src/utility/room/object-defs.ts b/packages/frontend/src/utility/room/object-defs.ts
index 6d0c988a50..b7809f9af0 100644
--- a/packages/frontend/src/utility/room/object-defs.ts
+++ b/packages/frontend/src/utility/room/object-defs.ts
@@ -35,6 +35,8 @@ import { laptopPc } from './objects/laptopPc.js';
 import { lavaLamp } from './objects/lavaLamp.js';
 import { letterCase } from './objects/letterCase.js';
 import { milk } from './objects/milk.js';
+import { miPlate } from './objects/miPlate.js';
+import { miPlateDisplayed } from './objects/miPlateDisplayed.js';
 import { mixer } from './objects/mixer.js';
 import { monitor } from './objects/monitor.js';
 import { monitorSpeaker } from './objects/monitorSpeaker.js';
@@ -58,6 +60,7 @@ import { speaker } from './objects/speaker.js';
 import { steelRack } from './objects/steelRack.js';
 import { tabletopCalendar } from './objects/tabletopCalendar.js';
 import { tabletopDigitalClock } from './objects/tabletopDigitalClock.js';
+import { tabletopFlag } from './objects/tabletopFlag.js';
 import { tabletopPictureFrame } from './objects/tabletopPictureFrame.js';
 import { tapestry } from './objects/tapestry.js';
 import { tetrapod } from './objects/tetrapod.js';
@@ -99,6 +102,8 @@ export const OBJECT_DEFS = [
 	lavaLamp,
 	letterCase,
 	milk,
+	miPlate,
+	miPlateDisplayed,
 	mixer,
 	monitor,
 	monitorSpeaker,
@@ -122,6 +127,7 @@ export const OBJECT_DEFS = [
 	steelRack,
 	tabletopCalendar,
 	tabletopDigitalClock,
+	tabletopFlag,
 	tabletopPictureFrame,
 	tapestry,
 	tetrapod,
diff --git a/packages/frontend/src/utility/room/objects/allInOnePc.ts b/packages/frontend/src/utility/room/objects/allInOnePc.ts
index 9c2f24fdb8..1f63f4e20f 100644
--- a/packages/frontend/src/utility/room/objects/allInOnePc.ts
+++ b/packages/frontend/src/utility/room/objects/allInOnePc.ts
@@ -89,6 +89,7 @@ export const allInOnePc = defineObject({
 				tex.wrapV = BABYLON.Texture.MIRROR_ADDRESSMODE;
 				tex.level = 0.5;
 
+				screenMaterial.unfreeze();
 				screenMaterial.emissiveTexture = tex;
 
 				tex.onLoadObservable.addOnce(() => {
diff --git a/packages/frontend/src/utility/room/objects/laptopPc.ts b/packages/frontend/src/utility/room/objects/laptopPc.ts
index db05885028..bc723160f9 100644
--- a/packages/frontend/src/utility/room/objects/laptopPc.ts
+++ b/packages/frontend/src/utility/room/objects/laptopPc.ts
@@ -98,6 +98,7 @@ export const laptopPc = defineObject({
 				tex.wrapV = BABYLON.Texture.MIRROR_ADDRESSMODE;
 				tex.level = 0.5;
 
+				screenMaterial.unfreeze();
 				screenMaterial.emissiveTexture = tex;
 
 				tex.onLoadObservable.addOnce(() => {
diff --git a/packages/frontend/src/utility/room/objects/pictureFrame.ts b/packages/frontend/src/utility/room/objects/pictureFrame.ts
index 6403974217..63f48d35f6 100644
--- a/packages/frontend/src/utility/room/objects/pictureFrame.ts
+++ b/packages/frontend/src/utility/room/objects/pictureFrame.ts
@@ -164,6 +164,7 @@ export const pictureFrame = defineObject({
 				tex.wrapU = BABYLON.Texture.MIRROR_ADDRESSMODE;
 				tex.wrapV = BABYLON.Texture.MIRROR_ADDRESSMODE;
 
+				pictureMaterial.unfreeze();
 				pictureMaterial.albedoColor = new BABYLON.Color3(1, 1, 1);
 				pictureMaterial.albedoTexture = tex;
 
diff --git a/packages/frontend/src/utility/room/objects/poster.ts b/packages/frontend/src/utility/room/objects/poster.ts
index 3fa42b7b0f..f880cdfb25 100644
--- a/packages/frontend/src/utility/room/objects/poster.ts
+++ b/packages/frontend/src/utility/room/objects/poster.ts
@@ -92,6 +92,7 @@ export const poster = defineObject({
 				tex.wrapU = BABYLON.Texture.MIRROR_ADDRESSMODE;
 				tex.wrapV = BABYLON.Texture.MIRROR_ADDRESSMODE;
 
+				pictureMaterial.unfreeze();
 				pictureMaterial.albedoColor = new BABYLON.Color3(1, 1, 1);
 				pictureMaterial.albedoTexture = tex;
 
diff --git a/packages/frontend/src/utility/room/objects/tabletopFlag.ts b/packages/frontend/src/utility/room/objects/tabletopFlag.ts
new file mode 100644
index 0000000000..27c4f2342f
--- /dev/null
+++ b/packages/frontend/src/utility/room/objects/tabletopFlag.ts
@@ -0,0 +1,85 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import * as BABYLON from '@babylonjs/core';
+import { defineObject } from '../engine.js';
+import { createPlaneUvMapper } from '../utility.js';
+
+export const tabletopFlag = defineObject({
+	id: 'tabletopFlag',
+	name: 'Tabletop flag',
+	options: {
+		schema: {
+			customPicture: {
+				type: 'image',
+				label: 'Custom picture',
+			},
+			fit: {
+				type: 'enum',
+				label: 'Custom picture fit',
+				enum: ['cover', 'contain', 'stretch'],
+			},
+		},
+		default: {
+			customPicture: null,
+			fit: 'cover',
+		},
+	},
+	placement: 'top',
+	createInstance: async ({ model, options, scene }) => {
+		const flagMesh = model.findMesh('__X_FLAG__');
+		const flagMaterial = model.findMaterial('__X_FLAG__');
+
+		const updateUv = createPlaneUvMapper(flagMesh);
+
+		const applyFit = () => {
+			const tex = flagMaterial.albedoTexture;
+			if (tex == null) return;
+
+			const srcWidth = tex.getSize().width;
+			const srcHeight = tex.getSize().height;
+			const srcAspect = srcWidth / srcHeight;
+
+			updateUv(srcAspect, 24 / 16, options.fit);
+
+			model.updated();
+		};
+
+		applyFit();
+
+		const applyCustomPicture = () => new Promise<void>((resolve) => {
+			if (options.customPicture != null) {
+				const tex = new BABYLON.Texture(options.customPicture, scene, false, false);
+				tex.wrapU = BABYLON.Texture.MIRROR_ADDRESSMODE;
+				tex.wrapV = BABYLON.Texture.MIRROR_ADDRESSMODE;
+
+				flagMaterial.unfreeze();
+				flagMaterial.albedoColor = new BABYLON.Color3(1, 1, 1);
+				flagMaterial.albedoTexture = tex;
+
+				tex.onLoadObservable.addOnce(() => {
+					applyFit();
+					resolve();
+				});
+			} else {
+				flagMaterial.albedoColor = new BABYLON.Color3(0.5, 0.5, 0.5);
+				flagMaterial.albedoTexture = null;
+				resolve();
+			}
+		});
+
+		await applyCustomPicture();
+
+		return {
+			onOptionsUpdated: ([k, v]) => {
+				switch (k) {
+					case 'customPicture': applyCustomPicture(); break;
+					case 'fit': applyFit(); break;
+				}
+			},
+			interactions: {},
+		};
+	},
+});
diff --git a/packages/frontend/src/utility/room/objects/tabletopPictureFrame.ts b/packages/frontend/src/utility/room/objects/tabletopPictureFrame.ts
index 4163812769..b09e04dfdd 100644
--- a/packages/frontend/src/utility/room/objects/tabletopPictureFrame.ts
+++ b/packages/frontend/src/utility/room/objects/tabletopPictureFrame.ts
@@ -169,6 +169,7 @@ export const tabletopPictureFrame = defineObject({
 				tex.wrapU = BABYLON.Texture.MIRROR_ADDRESSMODE;
 				tex.wrapV = BABYLON.Texture.MIRROR_ADDRESSMODE;
 
+				pictureMaterial.unfreeze();
 				pictureMaterial.albedoColor = new BABYLON.Color3(1, 1, 1);
 				pictureMaterial.albedoTexture = tex;
 
diff --git a/packages/frontend/src/utility/room/objects/tapestry.ts b/packages/frontend/src/utility/room/objects/tapestry.ts
index 25b9918b73..fe9e47e94f 100644
--- a/packages/frontend/src/utility/room/objects/tapestry.ts
+++ b/packages/frontend/src/utility/room/objects/tapestry.ts
@@ -96,6 +96,7 @@ export const tapestry = defineObject({
 				tex.wrapU = BABYLON.Texture.MIRROR_ADDRESSMODE;
 				tex.wrapV = BABYLON.Texture.MIRROR_ADDRESSMODE;
 
+				pictureMaterial.unfreeze();
 				pictureMaterial.albedoColor = new BABYLON.Color3(1, 1, 1);
 				pictureMaterial.albedoTexture = tex;