At one time I had intended to mount them to a nail or hook at one end and short bungie pulling them tight at the other (probably on the underside of the lid of my truck tool box). Still think it sounds like a good idea...I've just never gotten around to it!
Also...I agree with Tom, you gotta limit the number of sizes. Make at least 6-8" jumps between sizes.
*One size for climbing saws (mine are 14").
*One limbing saw size (18"...I might do 20" if I were starting over) - I keep these on all saws most of the time and rarely switch to:
*Felling (I don't do a lot of removals so 24" takes care of most needs).
*Big, because sometimes you need it (rarely is 32" not enough around here...but again, I don't do a lot of removals - I only have two or 3 chains in this size.)