I would add a tiny bottle (miniature) of booze - vodka / whisky / whatever you've got - it's handy for everything from toothache to insect bites to "nerves" to cleaning your tweezers!
I came home earlier with half of Boots and Superdrug. Not sure how that happened! Have constructed a weeny first aid kit in a small tiffin tin from Poundland. Added steristrips (thanks itsy!), hypoallergenic latex type gloves and rennies to the previous list. Additional bits and bobs are sturdy and small enough to be wedged in the side bits of my rucksack (like a pack of Compeeds and a small insect repellant). Small tube of savlon cream can go in my wash bag. Still need Anthisan for bites.
Hmm... emergency booze. Hadn't thought of that. Are miniature bottles made of plastic?
I'm getting insanely excited about this now. I'm going to be unbearable at work tomorrow
I actually think that I'll be safer in terms of security wandering across Europe than being in London over the Olympics - there's already been reports that pickpockets are migrating here for the easy pickings during the Games. From what I've seen of the tourists that have already arrived, they've got plenty of easy meat.