Ah! The best one is when disassembling some item, a sub assembly, not known to be spring loaded flies apart.
Then you are on hands and knees, searching for one or more parts, the shape of which is unknown, (Let alone which way up they should go when reassembling, IF found)
Once, I lterally had to take everything ouit of the workshop to find some minute part that had flown to the floor behind some much larger piece of equipment.
Now, where possible items are stripped undxder a tiwel or rag, and in a box or over tray to minimise the risk.
But not always sucessfully!
And, yes, the item, made a few minutes ago and put “in a safe place” miraculously moves to another location.
Even my 6″ rule does that, regularly!
I never see the elvesm but they are most certainly hiding there.
Howard
Howard