Since the stake is always (or almost always) in a loop of cord or tape attached to tarp or tent, try to develop the habit of pulling the stake and bagging it when you remove the loop from it. Failing that, tie a short length of colored yarn to the top to assist in locating the stake. My problem is less with loosing stakes than it is with mangling them when hammering them into rocky desert soil. Anybody want a U shaped 8" Easton stake?