Hope you are taking travel sizes of those toiletries. Like another, I would skip the deoderant. What are you going to use to wash your cookware? Might consider a small celo sponge. Also, small bottle of something like CasmpSuds works for washing dishes and the body. Towel? I take a synthetic PakTowel for both body and cooking stuff. Dries quickly. If you are going to preapre food on a Frisbee that has hit the ground a lot, I would make sure it's been thoroughly cleaned. One set of off bike cothes.

I think by headlight, people mean camping headlamp. More handy than a hand-held flashlight. Extra phone battery? What are the realistic chances you will need one for less than one week? Replace that with bug repellant.