performance cat1 bag
performance cat-1 piccolo bag sounds like what you're asking for.
It is small, but mine holds 1 tube, 2 co2 cartridges, a screw-on co2 tip, 2 tire levers, a multitool (w/ chainbreaker), a couple of patches and band-aids, and a five dollar bill for patching a tire or buying a tube if necessary.