car keys or wallet which sends me back and makes me late.
Flat keys. Fortunately, I had my window open and I asked a much more agile youngster to hop in and open the door for me, which luckily was alright with him. Actually, I have done that twice, but the first time I had to wait until I got released from the drunk tank and then defecate behind a dumpster, since obviously I didn't have the keys on me. Had to call the managing firm for a maintenance guy to unlock the door for me, which obviously always costs a bit. I know, I'm an orangutan, in more ways than just one. The latest thing I forgot, was my wallet and that was about ten days ago.
Lunch, keys, wallet, umbrella, phone, what day it was, etc. Over the years I have developed the habit of lining everything thing up the night before so as I am leaving I have everything I need.