Models
D20 3D Printable Models. Makeshape.co have 6 D20 3D Printable Models.
The Book Storage – The Dice Book
Makerworld
Yixeo
Free
Shoji / Kumiko angle jigs
Makerworld
Ueda
Free
Low Poly D20 thinker
Printables
Larry Shatzer, Jr.
Free
Atlas holding a D20
Printables
Larry Shatzer, Jr.
Free
Dice tower dragon with storage compartment
Cults3d
Tronic3100
$5.68
Bah Humbug dice
Myminifactory
Crosslances
$5