Encyclopedias

1573726450 / AE491114

Kaleidoscope

1573726409 / AE491114

distinction between reality and projection

Models

1573726211 / AE491114

skeletons, cells, molecules, human models

Puzzle

1573726130 / AE491114

LEGO

1573726105 / AE491114

Abacus

1573726079 / AE491114

Looking Glass

1573720864 / AE491114

a holographic display( https://lookingglassfactory.com/ )