One problem with the tool bag that I have is that it can't hold a hammer. A hammer is something I deem useful for a variety of purposes and I've never had a hammer that can just fit in the tool bag. My friend Elliott never even had a hammer, always borrowing mine because I had a toolbox at the time and he has toolbags (so I could carry a hammer, among other things).
I like the tool bag though and if a hammer won't fit in it, that's ok. I am usually doing things that require screwdrivers, wire cutters, pliers, nutdrivers, Torx drivers, and occassionally the use of a wrench. You know, voiding warranties. But sometimes I need a hammer.
I finally found one that can fit in the tool bag. At City Mill, I saw a mini hammer. I had actually seen it before, but finally picked it up the other day. Here's a picture:
Yes, physics 101 will tell you that a short handle hammer is stupid. However, for hanging pictures and finishing the job of voiding warranties, the shortie hammer works fine.