WARNING: MAY BE CRUEL!!!!!Wake up really early one morning and take all your families priceless artifacts and hide them under your bed. A couple of minutes later, scream and tell your family you got robbed!!! XD
A good prank you can pull on your little sisters is put food coloring in their milk and cereal to make it seem as if the milk has gone bad. You could also prank them that they are late for school by waking them up late in the night.
depends on how old. if she is little, like 5-7 pretend no one can see or hear her go around saying where is she??? if she is about 8-10, put ceran wrap over the cereal bowl. if she is 11-13 put mayonaise in her lotion or frosting in toothpaste. if they are older, put flour on their fan. also for adults you can make them "tea" but the tea is vinegar and the "tea bag" is a little bag of baking soda. you can make this by poking a small hole in a normal tea bag and filling it with baking soda. good luck!!! if you use these, comment because i want to see how it goes. :)