I'm not a fan of pranks either, but this one that my mother pulled on me and my sister was brilliant.
My mother was in Europe during Easter. She had arranged Easter baskets for me and my sister before she left and instructions for my dad.
We found our baskets and there was a large baking potato in each basket, complete with a bit of root growing out of each potato. Of course, my sister and I assumed that my dad had misunderstood.
I don't remember how we figured it out, but the potatoes were actually large chunks of Danish marzipan, moulded into potato shape and covered in cocoa. The "roots" were almond slivers. We were very happy, and relieved. Danish marzipan was one of our favourite candies.
May you live as long as you wish and love as long as you live.
Robert A. Heinlein