No thrills shelf with walls that I designed for my camper to hold small things. 3 versions total. One version has ¼ inch holes so it can be mounted with screws or something like command strips, as well as another larger version with screw holes, and the other version has no holes and can be mounted with command strips.
EDIT: added an additional file with an even larger shelf.
The author marked this model as their own original creation.