I happened to come across the blog of a family who makes it a point to look for change (and paper money too of course) anytime they are out and about. Finding this blog coincided with my husband showing me $.83 he had picked up in various parking lots while in the midst of working his part-time job.
We now have a jar to chronicle and keep our finds. I think it will be fun. A lot of people blog daily about what they find. I don't see myself doing that, but I will keep my eyes on the ground from now.
Here is the link to the change finding family blog: