I believe the Invisible Man in the movies had no trouble navigating, perhaps a higher form of sensory ability not related to sight. Or maybe something ancillary like Harry’s invisibility cloak.
Feeling your pain Monty. Drop things thru the engine bay all the time. Find most on the floor. Sometimes things end in neverland, never to be seen again.
Sorry not related but, no imaging appears anywhere in GoComics. Just blank panels. Any suggestions?