Some variety of push-release Kershaw. It’s a Grid but I’ve used Leeks in the past as well.
In my time, I’ve purchased two different genuine Victorinox knives. Both were purchased within about two years of each other in the early 90s. The first one had one of the decorative plastic side pieces pop off from a fall I wouldn’t have expected to hurt it. My brother tossed me the (closed) knife, I fumbled it and the knife fell about 10 feet down a carpeted stairway. Upon examination, while attempting to glue the piece back on, I noticed that one of the rivets holding the thing together was loose. It either came loose from the fall or wasn’t set correctly at the factory. This knife was replaced under warranty and it served me well for ocational use. I think I may still have it in a box somewhere but I haven’t seen it since my last move. Knife number two was a much smaller model that was easier for everyday carry. The blade snapped off entirely while I was peeling an apple. I pretty much swore off the brand at that time.
I have a Spyderco Delica 4 that my dad gave me. I’ve always thought knives were really cool.
I have a Craftsman 4-way pocket screwdriver and a round spark plug gapper on one key ring as key finders. I have a key shaped penknife on the other key ring.
And that, to me, is exactly the point. I have carried a knife or multi-tool in my pocket just about every day since I was 6-7 years old. When I get dressed, the knife/tool goes in my pocket just like my car keys, it’s second nature and I don’t consciously think about it. Because of that, I have donated so many knives/tools to TSA, arenas, government buildings, etc. that I decided that my everyday carry will be a cheap no-name. It’s a feature, not a bug!
I have a Victorinox Rucksack in red with a locking blade and I added the eyeglass screwdriver in the corkscrew. I’ve had it a lot of years and recently had it serviced when the scales started to separate and the awl was twisted from use. Came back as good as new and under warranty. I made a thread about it some time ago, and I have nothing but good things to say about them. Great tools! I’ve also had a Spyderco Delica for a while and they make great knives as well!
Victorinox Explorer, which has more than I need but everything I want.
I quit carrying a pocket knife everyday many years ago, when I started flying more frequently.
I don’t carry anything but I keep a well equipped tool box in my car
I carry a Victorinox swiss army card in my wallet (of the model pictured). I use its knife, scissors, and/or toothpick on a near daily basis, and now and again the tweezers or the screwdriver on the end of the nail file.
It’s a few times thicker than the average card but my wallet is a few times thicker than the average wallet. (It’s a big leather thing my grandfather gave me a couple decades ago. It’s getting pretty beat up; maybe I should replace it. (The card knife I mean, not the wallet. The wallet’s beat up too but it’s not going anywhere.)
It’s a shade over 2" long.
Honestly, I don’t really miss having a real knife. I value getting through security with zero delays and zero brainpower more than I value having a knife these days.
I seldom fly but when I do I just leave my knife home. And it drives me NUTS. I’ve had a “jackknife” of some sort in my pocket since I was 11 (58 years ago). Feels almost like a “naked in public” dream not to have my knife with me.
I have way too many pocket knives. My favorites lately have been the benchmade phaeton and the crooked river mini. The phaeton was an impulse buy due to a very good sale and it’s surprisingly useful. Never having to touch the blade or shift my hand at all makes it safe and secure even up on a ladder or while holding something large and unwieldy.
I’ve got a Kershaw Blur clipped inside my pocket. I sprung for the S30V powdered steel version. Had it a little over a year and it’s still razor sharp, with every day use.
Also have a Buck 397 Omni folder on the belt, that’s the “big” knife. It’s actually not that much longer than the Kershaw, but it’s much wider.
A long time ago my mother was looking at my knife and asked “What if someone takes it from you and uses it against you?” I pulled out the other one, the big one, and said, “That’s what this one’s for!” 
I generally carry a Kershaw Halogen. Like many of their knives it has the “speed safe” tab for one handed operation. Very handy if you’re already holding something that needs cutting.
I’ve had, and still have many knives purchased over the years. CRKT is a reasonably good brand for a price point conscious buyer.
Recently bought my first Zero Tolerance blade and can see more of those in my future.
In the center console of my car, have some ratty Buck all-metal folding knife I found in a parking lot. The tip originally looked like it was busted but closer examination makes me think it was intentionally made that way. Picture a standard pocket/hunting knife but the tip is cut at a 45 degree angle rather than coming up gradually. I couldn’t find a picture of it on their website.
Anyway, like I said, I found it in the parking lot of a nature preserve (probably part of someone’s fishing kit) and it’s come in handy once or twice but not enough to warrant carrying one on my person.
If it is this one, the blade is supposed to be that way.
Hey, that’s the one! I couldn’t find it on Buck’s own site.
Yeah, at first I thought someone just pitched it after snapping the end but then, when I examined it closer, it looked as though the “broken” part still had a honed edge so I figured it must be intentional. Do you know what the point (heh) of the blade is? It must serve some purpose to be made like that.
It’s a “Japanese style” tip. They are intended primarily for puncturing/penetration, so they are a popular style for combat knives. Not as good at cutting/slicing as a blade with a belly, but you can still use it as a utility knife.
This. Only I fly pretty frequently. And as a result, I’ve accidentally smuggled several knives through TSA, and had to check my luggage a couple of times.
I use a knife to cut off a loose hangnail. Or to slice a piece of fruit. Or to peel a piece of fruit. Or to pick my teeth. Or to open a box. Or to sharpen a pencil. Or just as a fidget toy.