Years ago my friend Paul V discovered that LP Lik Be re-used their toy puppy eyes as space domes. You can read about this fascinating discovery on his fab SpaceX website.
https://www.triangspacextoys.info/SpGAderv/LPHK/LPhkSmTy/LPdomes/LPdomes.html
Those domes are a mindworm. I just cant help coming across rolling dog dome eyes. I've spoken about blow moulds before and here's another one in the US, a large ball visible underneath that propels the pooch along.





















