The origami monkeys were created by Tomoko Fuse. The instructions to fold them can be found in her book Origami Gifts
The vase was created by Saburo Kase. The instructions to fold it can be found in the book Origami: Paperfolding for Fun
I folded the monkeys with 4" (100 mm) squares of Folia paper, and the vase with a 12" (300 mm) square of construction paper.