My friend always has a "reverse dinner" on April Fools. She sets the table wrong, reverses the chairs, serves dessert first, ends with appetizers.
My eight-year-old daughter and I have been making tasty fakes for my wife for years. We'll use desert ingredients to make realistic looking pork chops, stew or chili, and then cook the real thing.
My wife comes home, and the whole house smells like "what's for dinner". It isn't until the first bite she figures it out. My daughter loves it!
Now we just have to figure out how to pull this off on a Saturday...