There are lots of tool rolls out there, I've made a couple but for tools/emergency-gear for the trunk of a car; on the bike tool kit would be the same, just a bit smaller. Do a google image search for "tool roll" and you'll see lots of examples. Linsey Strange has a really nice one here:
http://lindseystrange.com/examples/5Of course mine were either Cordura or XPac.
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