Of late I've been playing more and more with small pocket fixed blades, traditional of course. Last winter I picked up a pocket puuko, for lack of a better description. As you can see from the peanut tossed in for scale, and the Mike Morris pocket fixed blade I've carried a fair bit, it's about the size of a open peanut but with a thicker handle for a better grip. It's actually a good knife, carbon steel, and holds and edge very well and cuts well in spite if the thick scandi blade profile.
Aside from the problem of arthritis in the hands, I can see the big advantages of the pocket fixed blade, like no cleaning of hidden areas or the blade being hard to open with cold/wet hands. People who have seen it seem to think it's cute, and the fear factor seems non existent for the non knife people. I guess the looks are disarming.
I wonder if pocket puukos are the answer to the senior citizen pocket knife?