Button Box has over 40 built-in sound effects that are guaranteed to amuse and entertain you for hours. Sounds include: shut-up, whatever, burp, bleep, loser, drum roll, explosion, gong, monkey, yee-haw, crickets, uh-oh, and many more.
If that's not enough, you can even record your own sound effects to create new buttons! Customize your sound effects board to suit your taste.
The best part is you get all of this for FREE! Power users can get a Pro version.