Used Iseki TK-25 micro-tractor, that I bought, came with a broken (missing) cover for ignition. I replaced it with a 3D printed part using colorFabb's varioShore TPU.
As always, it took several iterations to get the part right.
3D model:
iseki-tk25-key-cover-Bodyiseki-tk25-key-cover-Body.3mf47 KBdownload-circle