A forged bronze bowl of glowing coals on three legs. Make it at an anvil with Smithing 20 and four bronze bars, or trade for one. Decorative light only. Placing it gives no extra XP. Move it to keep it; dismantling destroys it.
Open a nearby ground tile’s action menu and choose Build. The preview and server check the tile before placement.
Rearrange: press on it and drag it to a nearby tile (on a phone, hold a finger on it, then drag), or choose Move in its action menu to pick it up and click where it goes. Its paint and turn go with it, the floor stays behind, and no new materials are needed.