My top 2 faves are:
1) BB gun
2) badminton raquet
Of course, wiffle ball bats work pretty good too. I won't hesitate to use my hand if none of the other "tools" are available.
I once decapitated a carpenter bee with my BB pistol.....James Bond style. Pollen exploded as his head was sent in one direction, body in another, helicoptering to the ground.
The best part of this story - I was aiming for the head (not joking).
p.s. can't see youtube at work.....