I carry a multi-tool. see my comments about rebar above. However if I am stepping out of the normal routine, I also carry dedicated tools. My favorite is a small channel lock plier. Guess it is about 5" or a bit smaller. Very light weight, sort of like ignition pliers. but stronger.

I put several tools in a small belt pouch. Which tools depends on the situation. I do a lot of electronics works so my tools are not useful to others. But the small channel lock is great. It is not the 6" one. Smaller, hard to find.