Pick up, check it out, anonymously mail it to address listed on D/L....

If it has an ungodly amount of cash in it, say $1000 or so, keep cash and mail rest same as above.

If it has a lot of cash in it, say $100 to $500, ponder doing "A" before mailing rest as listed above.

If it only has $20 bucks in it, just mail the whole thing in.