I was going to say, a Swiss Army Knife. Lifechanging. I use it quite a lot. It's small for men's pockets, and you can get smaller ones too (mine is a cybertool, so on the middle-large size of SAKs). I also have a SwissTool that's huge and just tool porn and fun to use as a fidget device, but way too big for me to EDC, and way overkill for what I'd end up needing it for. Also the SwissTool is over $100. The Cybertool was at $99, and there's plenty of less specialized SAKs going down to like $30.
I have the Swiss Army Rambler as my EDC. I need scissors a lot, and the Phillips head screwdriver comes in handy more than you'd think. Women's pants have small pockets and the Rambler is perfect.
I bought an Opinel Carbon just last week. I got the size 9. It lives in my work laptop bag and comes with me every day. I also got the Opinel non-Carbon (stainless?) size 7 for my wife, and she has been using it a lot to open packages, food cartons, etc. Its handy just to have a sharp knife at hand when you need it. The Opinel models are very good for the price.