ShamaL/guide

Penlight (ペンライト)
Enter the red door. Go north-west and enter the girl's restroom. Interact with the penlight on the floor.

Eyeball Balloon (めだまふうせん)
Enter the blue door. Go north-west until reaching vines in the shape of an entrance. Enter and complete the short maze. Interact with the balloon.

Candlestick (しょくだい)
Enter the pink door. Go right, down, then right until reaching a door. Enter the door and interact with the candle.

Kokeshi (こけし)
Enter the white door. Go south-west and interact with the small red doll.

Nurse (かんごし)
Enter the black door. Go west and enter the red structure. Interact with the person.

Mine Cart (トロッコ)
Enter the bottom-left nexus door. Go north until reaching a cart. Interact with the cart.

Glass Bottle (いっしょうびん)
Enter the red door. Go north, then west. Enter the double doors. Go right until reaching an alleyway. Enter the alleyway and interact with the glass bottle.

Sunglasses (グラサン)
Enter the flashing door. Find and interact with the pictured NPC.

Carpet (じゅうたん)
Enter the flashing door. Find and enter the colored door. Follow the tile path south. Enter the dark grey door. Follow the path to a room with double doors. Head left and interact with the moon-shaped object. When there are more than two entrances: Right -> Far Right -> Left -> Left. Interact with the sparkling object. Interact with the flying carpet.

Coin (コイン)
Enter the top-right nexus door. Go south to enter the water, then north-east. Interact with the wandering coin.