<grin> Coins <i>are</i> cash.<p>I rarely have more than a few dollars in coins, because I consciously work to get rid of them.<p>If you can't be bothered doing that, just walk along to your closest supermarket and "pay" in coins. (You don't need to buy anything, if you don't want to.) Then take your change.<p>Your change will be given back in foldable, and the left-over balance under a dollar will be converted to as few coins as possible.