small pre-packed saddle bag (the little topeak one) – contains multi tool, chain tool, 2 x spare tubes, spare chain links and a tiny, weeny patch kit.
frame fit pump – means I can get my tyres up to “proper” pressure if I need to, and I only use c02 when racing
food, money, phone, keys, waterproof/ gillet in pockets.
I frequently do early start rides – and I find trying to remember everything I need and cram it in my pockets a real pain and faff first thing. Plus the saddle bag is small, stuffed to the gills so it doesn’t rattle, and doubles as place to attach to a rear light – so I don’t have to fit an ugly plastic bracket thing