When you put something carefully aside so that you can find it quickly when you have to go to work, it will be the first thing to have a drop sheet put over it.
Likelihood that something will be moved somewhere that you can't find it increases exponentially with the value and use of that something.
Drywallers behave as if they were the gondoliers of the construction industry (they preen, run in packs, exhibit macho tendencies). Unlike gondoliers, they are at the bottom of the food chain, and are expected to break things and make a mess. Which they do.
Painters, on the other hand, although also quite low on the food chain, are quite civilized.
Drywallers listen to Rap music. Painters listen to the CBC.
Nothing is ever completely finished.