6 model

Free

Polímero de Taza / Mug Polymer Core

Printables

Free

Yet Another Clearance Test

Printables

Free

Negative Space Dragon

Thingiverse

Free

Holographic Negative Space Ice Cube with Skull Trinket and Keychain

MyMiniFactory

Free

Spider-Man negative space

Thingiverse

Free

3v LED and a CR2032 battery negative space for Boolean

MyMiniFactory