Here are some ideas to give you some inspiration.
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Category: Pranks
Misbehaving Dinosaurs Prank
Any parent that does this WINS!! via bitsandpieces
Cars Cars!
Turn your snowy car into a character from the Disney Movie Cars.
via pinterest
Cake in a Can Surprise
Shrunken Head Punch
Simpler than you think! Check it out HERE
Do It And How 