Shockolate Vault
Absolute Genius idea.
Hide all your expensive Thorntons chocolate Alpinis in this jar, set the timer then sit back all smug as your desperate chocaholic girlfriend whinces in pain every time she tries to get at one of the chocolates.
The jar is programmed to send a mild electric shock if anyone attempts to open the jar before the allocated time has expired.
Costing a sweet £10 from Crazyaboutgadgets.com this will give you literally, minutes worth of fun. You could even put your cigarette stash in there if you’re trying to quit.
My only advice:-  do not, I repeat, do NOT put a small stupid pet in the jar - cos that would not be big or clever.