Woot offers AHZI Remote Gag Gift Funny Sound Generator Joke Prank Novelties Machine[Upgraded Version] for $4.19 (orig. $6.99). Free shipping for Prime Members. 

Product Description:
You can press the remote control when someone is near or sitting in this position. The interesting sounds made will make everyone happy. 

• You can press the remote control when someone is near or sitting in this position. The interesting sounds made will make everyone happy.
• Use it anywhere - at parties, school, movies, office, in the gap of the sofa, under the chair, in the elevator, in the Thanksgiving Turkey!
• Machine size：3.22*1.49*2.36 inch. Small size is easy to carry and hide.You can now make interesting sounds wherever and whenever you'd like.Give everyone a laugh with this funny machine.
• Up to 30 feet effective remote control distance.remote control signals can even pass through a wall. when used in the same indoor space, you don't need to aim at the machine.
• Flat bottom design can be placed at will.There is double-sided tape on the back of the machine, which can be pasted to the position you need.