I have this handlebar bag. It came with a gizmo to also attach my computer even though it's sort of in the way.
http://www.rei.com/online/store/Prod...HP_CYCLING_TOC
This bag comes with a strap to convert it to a fanny pack, which I'm not real likely to do: my fanny doesn't need that added lump!
I don't have an inhaler, but I do carry -- photo id, could carry a wallet, camera, cell phone, car keys (bike lock key on ring) and a sandwich size ziploc bag of trail mix on a regular basis. Oh yeah, chapstick too. I've just added a little bottle of hand sanitizer, since I can't take that on the airplane with me anymore.
Surprisingly, the bag's not full. When we get off the bikes, there's room for DH's keys, phone and wallet, since he doesn't have pockets or something to carry that stuff in off the bike (yet). I'm also not using all the little pockets on the outside -- so, I think this could do the job for you!
(camelbak - you say you don't like yours much. Dunno why not, but that's okay. I like mine, but it has no storage compartment built into it. Someday, for a tour type ride, I think I'd get a new one with storage. That would be a pretty good place for serious snacks and extra clothing, and the feminine stuff too, as long as the bladder is sealed properly!)
Karen in Boise