My wife has a small snack bag that straps to her toptube and headtube. One night at a campground in California, a raccoon unzipped the top, and got away with her bag of M&Ms. It just left a few dirty paw prints as evidence. It was a good thing, because I would have been a suspect in the crime
Halt II dog repellent works good on raccoons, but remember to wash your hands before your rub you eyes after using it.
Second bike from the left, the little blue bag on the toptube near the headset.