for 1

you should be able to get a selection box for about twice that
magnets are very Handy for these parts when stripping a gun, provided you don't hear the BING sound and then they are Handy for finding them, the bigger the magnet the better, i often use one of the boating types it could lift an engine, speeds up the search no end
when storing spare ones, i lay out a strip of cellulose tape stick them down on half of it and then fold over the other end and stick it down
might save someone some hassle
fin