Have you ever had these little monsters (Littlest Pet Shop) everywhere on the kid's room floor? Was it impossible to walk anywhere even if you cleaned them up somewhere in a box every day... again and again? Then you might want to install these little houses and maybe you will be surprised as we were at our home :-D
Nozzle: 0.4
Layer height: 0.3
Perimeters: 2
Top/bottom layers: 2/2
Infill: 10%
Supports: No
Material: PLA
TIP: Install them on a wall using both-sided tape (small pieces) - just test which tape works best for your wall to not screw it up too much when removing it in future or choose a place where you don't care :-D