There are several groups here who create and hide little pieces of homemade art objects. I have found two of them so far, each one from a different group. This is a rock I found at the shopping center yesterday. i joined the group on FB and posted it as being found. Got a reply from a lady who said her daughter painted this one and hid it yesterday. She as excited that it had been found. You can check to see if your local area does anything like this, or start one yourself. Just create a FB page dedicated to your art drop group and start hiding little treasures around town with a link to your page. :) I think it's a great idea.
Benedict Arnold 