Our friend Chris over at Problem Solvers sent along a great little hack to assist with chain maintenance. The following text and picture come from the Problem Solver page -
We've seen (and considered designing our own) chain keepers for doing maintenance before. They typically seem to run about $10–20. A buddy of a buddy of a guy who knows a guy who knows this mechanic (Paul from Bike Tech Miami) who made this simple version from a derailleur pulley and a chopped quick-release skewer:
If you have a problem I'm sure Problem Solvers would love to hear from you.

Isn't that what the nub up on the seat stay is for?
Posted by: James Kingston | 06/08/2012 at 04:02 PM
i think the nub is mainly intended to keep the chain out of the way while you install the wheel or if you just need it out of the way without dirtying your hands.
if you don't want to grind all the paint off it (or if you don't have a little nub, i for one love a little nub) you can use something like this to clean your chain like a pro.
Posted by: Paul McIntyre | 06/09/2012 at 08:29 AM
Don't think you would need to cut down a QR skewer, 'cause if you did you'd have to re-thread the rod for the nut that fits on the opposite end. Use a QR seatpost bolt; that should be about the right size.
And then, what do you intend to use this hack for? Transporting the bike in a box on a plane/train/bus? If so, then I'd say use an old QR rear hub from a wheel that you had trashed. Cut away the spoke and rim; pull the cluster, and use it like that. This way the hub also acts as a spacer so that there less chance of the rear triangle being crushed or bent inward during baggage handling.
-"BB"-
Posted by: Bicycle Bill | 06/09/2012 at 11:46 AM