CB radio, a tow strap & shackle, and a full size spare. That's pretty much it as we aren't doing anything extreme. The CB is most important. You need to be able to communicate (read: call for help!!!). Plus, it's fun listening to the comments thrown around by the other guys & gals! You can get away with not having a tow strap, because most everyone else has one, but only forget the full size spare if you want to gamble that you won't get a flat. I didn't bring one last time, but the store at the Badlands park carries Pro Comps.