Where can I exchange Canadian loonies and toonies for USD in the US?

I recently returned to the USA (Los Angeles) from an extended trip in Canada with a sizeable (well, around CAD$ 25) amount of money in loonies and toonies (CAD$ 1 and CAD$ 2 coins). As I won’t be returning to Canada for a while and don’t live near Canada, I was hoping to exchange the coins, even at a worse rate (since they’re worth nothing to me at the moment). However, I went to a local Travelex and was told that they did not exchange Canadian coins and indeed, that no currency bureaus would take the coins. Is there anywhere I could go to exchange these coins?