[shermantanktop]

I had very similar flights of fancy as well. Some combination of low-tech, soapbox-derby materials and a wild idea that I could build a raft out of 2x4s and cross the lake! Or make a parachute out of a pillowcase! Or put wings on my bike and fly!

I’d doodle designs and look at piles of junk, imagining what I could do with the materials.

I think the appeal was partly that the proper materials were way out of reach for me, and if my terrible idea failed, it was just made out of everyday stuff anyway.

Hopelessly impractical and (as you say) a bit obsessive.