The tip for using hanging file folders has been posted many times. If there are instructions or notes you want to keep with the tool you can store everything together. The problem I have is that many of the things I want to store are longer than the 11" or 14" length of the folder. I just found one of these rolling carts at the thrift store:
The thing that's great is see that divider thing in the top? it will allow you to put 2 letter size hanging folders side-by-side. Now I can store all my rulers & guides including my 6X24. I can just use 2 adjacent file folders.
I paid way less, of course the drawers had gone missing, but hey I'm happy. Just something to keep your eye out for at garage sales & thrift stores.