Pop filter 3D models

Pop filter/Wind screen (with optional GoPro mount)

Shelf

Air filter testing

Diffuser for Pentax Q build-in flash

Water/Pop/Soda Bottle Cap Lid

Aeropress filter lid

Homestuck - Pop-A-Matic Vrillyhoo

Aquarium Overflow

Plywood Air Filter

Printable Carbon Air Filter

pool filter

GoPro 3 55mm Filter holder