We found that the little bottles that Diabetes blood test strips come i are exactly the right size for quarters to drop in.  Each one holds about $7 worth.  So whenever I find quarters in my pocket, they go in the current bottle, then stored in the RV.  Usually have $35 - 40 4 worth statched.  First time across the Chesaeak bay bridge-tunnel, thay wouldn't take anything but cash.  No credit cards or checks, and as we didn't realize how much the toll was, we were unprepared.  We gave them, and made them count, $30.00 in quarters and smaller change, while we sat in their toll lane with an RV and toad.