Climbing Mt Kenya (what not to forget)

Now, if you've bothered to read the first installment of "Climbing Mt Kenya" you'll already have some handy hints about what to bring. I think so far we've got
1 really really really warm sleeping bag
1 skiing jacket
1 hat
1 pair boots (people do say that you can do this in trainers but I wouldn't chance my ancles on the skee faces thank you very much)
1 camera (I know I didn't mention it but you've seen the photos)

Now we move into the territory of what one should have brought, but didn't as am very disorganised.
1 pair gloves (hmm, should have thought of that)
1 pair waterproofs (again fairly obvious)
Big water bottles that don't leak (don't use kids' ones from Nakumat)

Well there we go. Just some ideas, guide books can go on and on about it so why are you reading this.