The exercise ball was developed in 1963 by Aquilino Cosani, the first ones were much smaller and used in treatments for infants and newborns. [wikipedia]
Snooker is played using a cue and 22 snooker balls: one white cue ball, 15 red balls worth one point each, and six balls of different colours: yellow (2 points), green (3), brown (4), blue (5), pink (6) and black (7). [Wikipedia]
