https://mypapercraft.net/karaoke-room-paper-craft/
Here are the walls I used for karaoke. I also put a door on the outside. I wanted to use it as a room for my game center.
Does anyone have any ideas for a game center activity? I already have tons of figurines in front of arcade machines, reading manga, playing pool/Yugiho/Majong/Air Hockey, buying gashapon...