My daughter loves these mini Squishmallow's so I made a simple tray to hold them in her car for her. The tray hangs from the car vent using a small clip. The clip is modified from a clip created to hang masks from. I modified it so that the hook is longer.

No supports are needed to print. I recommend printing this with PETG since car interiors can get hot, and the clip needs a little bit of flex to work best. Print this as two pieces and then slide together like the in the picture.