Long story short, I acquired one of these little doodads many moons ago, and its freakin great. I have it on my GibbySG, you could put them across a tune-o-matic bridge (some people don't actually rest their hand there, somehow. I do.) I guess, but mine is attached to my D or G string usually on the headstock. It stays in place decently enough, moving the guitar wildly would be no problem, but if you bump it even with your hand it will move a bit or occasionally fall right off. Mine is still in good shape however, and I will be buying one of these doohickeys for each guitar I plan to gig or even jam with. I do not know if they come in more colors or have larger size ones (not size for picks, for more picks I meant), however this will hold anything from a medium fender pick to my 2.0mm dunlop purples...have not tried it with thin but I am sure it would work just fine.