I have made myself a bag I can put around my waist which is large enough to carry the most essential things - pen, glasses case a cheap pocket watch thing which also tells me the date and has an alarm plus a stopwatch - inside is a open pocket and a zippered pocket, on the outside a pocket made from what was a purely decorative bow, fastened with a strap and button.

I have lost far fewer things since I started to use that, and life is less exasperating.

There is also a 'going out' backpack with cards and money, bus pass, supermarket coupons in a tiny handbag inside it, a folding shopping bag, hairbrush, glasses for driving, keys in one front pocket, bank books in the other, in cold weather it holds a hat, scarf and gloves, and in Summer sun protection lotion, often it holds the latest project, notebook, anything which it would be annoying not to have. It is almost always in the same place, or in two other places, but no more - no use organising a place to put things and it not having a place to be waiting to be used.