Thanks for the comments. I've ordered some Steripods and I'll see about replacing the atomiser with one of those, depending on how big they are. It'll still be only 20ml, though. There just isn't room for a lot of water in a small kit.

I have some antihistamine tablets available, but I've never used them as I don't have any allergies myself. I might replace the indigestion tablets with them, though, as I don't get indigestion often either.

Moleskin comes in such a variety of sizes I don't know which to include. It's not something I've ever used myself.