I'm not really creative when it comes to pranking people. I still consider ringing someone up and asking them if they're refrigerator is still running to be a good gag. It's not, but I'm totally in denial.
So, I like to turn to others for inspiration whenever I plan on getting my prank on for April Fools' Day, because putting a bar of soap in someone's coffee, or tying their shoelaces together when they aren't looking, might seem like a good idea at the time, but it totally isn't.
I suggest trying out one of these pranks instead.