Why not build a model Trebuchet?
According to the website it will hurl a grape 30 feet.
I am going to build one, and I will take pictures and post the results.
Holy flying grapes, Batman!
My brother has built several Trebuchets. He even helped make one that is large enough to sling a gallon of candy out for a “candy hunt” for a group of kids at a children’s program. They had a lot of fun searching for the hard candy (plastic wrapped) in the grass!