Guilty on all counts. I remember one of the coolest things we ever did was to build a monster slingshot with surgical tubing and a funnel which took 3 of us to operate. That thing was the kidsize equivalent to having a B52 bomber. We dominated the neighborhood in every snowball fight and in summer with water balloons. We actually forced our neighbors off the roof of their barn they were building with a steady barrage.
About 20 years ago we made one from an old bicycle fork and surgical tubing. A wheelbarrow of defective tomatoes from the garden were used as ammo. Local kids gathered around three adults and wanted to shoot tomatoes. A busybody called the cops. They saw what was going on and fired a few rounds too.