i only have 3 picks. i always put them at the first fret between the low e and a strings. i never really lose picks. but i should get more though. and my pick i use with my Ibanez RG is black and it blends in with the fretboard, which is dark in colour. so i go around finding a spare pick to use and then when i get one and go to play i find the pick just sitting there. it's annoying.
but i don't really lose any picks.