Models
Riddle 3D Printable Models. Makeshape.co have 3 Riddle 3D Printable Models.
Voronoi Fracture Print-in-Place Pyramid Puzzle
Thingiverse
CreativeTools
Free
Puzzle Box
Thingiverse
Bitmask
Free
A-Mazing Box
Thingiverse
Wizard23
Free