I'm saving the pull tabs in a 5 gallon bucket, just curious about how much it's going to weigh, full. About 1/3 of the way there...
I tend to walk over the same ground often, so it gets a little cleaner. Really kind of getting the feeling this neighborhood has been cleaned out of coins, and good stuff. Occasional nickel, dime, or penny, few quarters on the surface. Do find and unusual number of brass fittings...
Figure persistence pays off in the long run, and if you are finding anything, you know there were people...