In 2005, someone invented a new kind of alarm clock, imaginatively called 'Clocky'. When you hit the snooze button, Clocky (who you presumably have to leave on the floor) rolls away and hides somewhere in the bedroom, forcing you to get out of bed to find him.
I did not make that up. But it got me thinking about other potential applications of this principle. Car keys is the obvious one - they go and hide, or disguise themselves as a bowl of Twiglets or something, when they scent alcohol. Any others?
I was also reminded of the classic 'Not The Nine O'Clock News' sketch from way back when cordless phones had just been invented. Anyone remember that one? It was funny at the time.