Only thing I know of in Chico is go bar hopping. Lots of options, Buck's Crazy Horse has a mechanical bull you can get your ass bucked off of, The Bear is well known, girls everywhere, etc, etc.
Theres always Sierra Nevada brewing company (on 20th/ by hwy 99), you would want to get reservations since all of the parents will be going that weekend. Vintage Hot Rod has a nice showroom http://www.vhrcustoms.com/contact_us.html There might be a race at silver dollar fair (not sure...theres a gun show that weekend) Bidwell Park/5 mile/ Honey Run covered bridge are cool places to shoot some pictures if your bringing a rod. The bear is good, celestinos pizza is right next to the the college/downtown they have good pizza. Other than that we've got a Walmart....thats about it.
I second Sprint cars at the Silver Dollar!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Make sure to sit in first couple rows Cody