Couple this with a stun gun for complete present protection
Tired of impatient gift recipients sneaking a peek at presents before Christmas morning? This 2-3/4" (7 cm) tall Gift Alarm has a motion detector with a 4 foot (1.2 m) range. If some lookie-loo tries to approach their stack of gifts, the alarm goes into DEFCON 1 with a loud siren and flashing red lights. You could also use this to protect the last piece of cake or your diary. Batteries included. Illustrated box.
Hear it for yourself: