One station at the Webelos Weekend involves launching water-filled soda bottles with bicycle pumps and the devices to do such, I thought, had been lost.  I have a specific area to my attic which stores Scout activity stuff and found it barren.  I asked my father if he would be willing to build more and he looked at me strangely saying “sure, but I don’t think we need to”.  He walked me outside and showed me where they were which was by our retention wall under several inches of dirt, sediment and multi-foot long pieces of ivy.  They had sat for at  most six months but looked like they were under years of growth.  Weird.