Not getting the point of hiding stuff in the frame, as well I don't see the point of having built in storage compartments on a bike. I carry 2 tubes, 3-4 co2, an Alien tool, boots in a seat bag and a mini pump mounted on a bottle cage. I do not require anything other then flat fixing tools, the Alien tool lets me fix a chain as well as gives assorted Allen keys, and in 30 years of cycling thats all I've ever needed to fix. I can see a spare rear spoke or two on my tourer, but then you need a way to get the cassette off to install a spoke. Maybe on a cross country tour I'd carry those.