Joined: Mar 2014
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Bikes: Foundry Chilkoot Ti W/Ultegra Di2, Salsa Timberjack Ti, Cinelli Mash Work RandoCross Fun Time Machine, 1x9 XT Parts Hybrid, Co-Motion Cascadia, Specialized Langster, Phil Wood Apple VeloXS Frame (w/DA 7400), R+M Supercharger2 Rohloff, Habanero Ti 26
Check out the Minoura Stainless Steel Band Cage holders. They are nice simple clamps that don't take up a ton of space and will hold your cage and bottle much better than a riv nut which could pop out. I think they are classier and better than a twofish or similar strap on.
Any shop with a Merry Sales Account can get them for you and they might have other distributors that I have missed but if your shop doesn't have Merry Sales you should convince them to get it. The employees will be happy and they have a lot of cool Japanese stuff you cannot easily get in the states.