I still think that the real usefull 1st tool was the human hand. it can hammer, lift, pull, push, scratch the soil and plant a seed
and many other useful deeds.
perhaps my 1st multi tool was a screwdriver. a screwdriver ?????? yes, turn screws, scrape paint or gunk, chip away ice, used
as a pry bar, use the handle to put the lid back on a paint can. and you will all think of something that you had used a screwdriver for.