"Gee, if only I had something to make pipes from..." - but wait, I do! These are leftovers (sprue) from the science table model kit where you had to break the pieces off. I thought I might need it again one day, didn't think it would be so soon! The green things are plastic beads from my childhood, cut in half. The red wheel is a leftover from the inside of a Kinder surprise egg, the white wheel used to be the steering wheel of a toy tractor I had as a child.