My girlfriend and I spent an hour one day picking up cans on a road notorious for people drinking and tossing their cans out the window. At the end of the hour, we netted about $20. About $2 was from a mix of $.05 refund cans and cans we scrapped for aluminum, $3 because we found two brake rotors, and finally $15 from a half scratched lottery ticket that happened to be a winner. So on your travels be sure to look out for other goodies as well.