Detour mini football (its not too mini, measures roughly 9"x5").
We're not bias just because they are Detour footballs but these things are actually awesome! They are the perfect size and weight for launching bombs to your friends, they are waterproof so you can Tom Brady it on the beach all day long, and they are made of neoprene so they are gripy yet somewhat soft. These beat a regular football all day long!
Due to shipping sizes/costs balls will come deflated. Any normal ball pump will do the trick! As always shipping is free in the US!