You can get a bag of inexpensive silly prizes (like a can of Campbell’s soup, or a roll of scotch tape, or a spatula, new, unused items that are useful, but kind of ridiculous and unexpected as prizes) then ask the audience random Questions, that are either good old fashioned grade school questions, or questions that might have a silly answer.
They do this at one of the local community theaters that I go to and it’s a hoot. Do little monologues in between that lead up the question. Make up stuff, like, “My Uncle Randall was the worst fisherman in the world, he was from Maine and we used to spend a week every summer up at Aunt Jane’s and Uncle Randall’s house. Inevitably, we would go down to the pond on their property, supposedly to fish for something to eat for our supper. Inevitably we would go home with a old tire, or a rusty paint can, and even one time he fished out what appeared to be an extremely large woman’s, well I’m guessing it was a woman’s, girdle. Still trying to imagine under what set of circumstances that ended up in there! Anyway, we always drug something home, but never any fish. Thankfully Aunt Jane was a really good cook and a pretty good sport, well not really the one time Uncle Randall brought home the girdle, but you know what I mean. And speaking of Maine, does anyone know what the official state (food, bird, flower, etc.) of Maine is?
So you just present some funny rambling anecdotes while you’re leading up to your Questions, then you hand out the silly prizes.