my one, if i ever finish it on time, will be a delay pedal, named something like time machine, so one can
if on 21-12-2012 something bad happens, just turn the delay knob to max delay (edit)... gives you more time to do what you never did but you wish you did!!

if on 21-12-2012 something good happens, just turn the repeat knob, gives you endless good times!!

and the level knob just set the level of good and bad!!

Ciao