Several things come in groups of 20. There are 20 cigarettes in a pack. You can also buy beer in 20 packs depending on the brand.
A case of eggs contains 30 dozen eggs.
women
Keystone light
Soda comes in groups of 6
dogs
Pennies
states
what comes in groups of 12
Arms, legs.
rugby teams
Case of beer
gaggle of geese
Inches in a foot
scorpion legs
Pennies