Ace of diamonds by Bill Caruba

Diagrams in The Magic of Folding Money by Bill Caruba
Folded from a toy US dollar bill

Card - king by Martin Lewis

Diagrams in Origami 4 by Robert Harbin
Folded from a square of origami paper

Chessboard - 5X5 - clean by John Montroll

Diagrams in Tanteidan 16th convention
Folded from a square of origami paper

Dice by Bill Caruba

Diagrams in The Magic of Folding Money by Bill Caruba
Folded from a toy US dollar bill

Dice by Wayne Brown

Diagrams in BOS Convention 1984 Spring
Folded from 6 squares of origami paper

Meeple by Gilad Aharoni

Diagrams in BOS Convention 2019 Autumn
Diagrams in the diagrams section
Folded from a square of origami paper