Pocket carry is my preference for EDC, so I am accumulating small guns too. I have the Khar CM9 in a thin kydex holster & a couple of Kel Tec P3AT's (one 1st gen, one 2nd gen) as my two (3?) favorites. I'm getting an original LCP (ordered & shipping soon) to add to the rotation; it will likely be a gift to a family member when they get their carry permit.
For variety, I also have the Remington RM380 & really like it. It's just slightly larger than the P3AT (& therefore the LCP) but is really smooth in feel & function. Being all metal, it's slightly heavier too, but that's part of its quality feel.
I recently got a SIG P238, & - wow - what a sweet little gun. If she wants it, it's for my wife so it hasn't gone into my pockets yet. It is about the size of the CM9. Easy to rack (my wife likes that), kinda heavy trigger but very crisp SA, & the manual of arms similar to a 1911.
I got a Glock 42 for my wife to try also, & - for me - it's just over the size I like for pocket carry. It shoots like a ... well, like a Glock. Nice gun.
While we're listing, I have a Walter PPK/S that's just fun. Heavy for pocket carry, but just neat cause of the history & image of the design. Heavy DA, ok SA, accurate but snappy w the blowback design.
I've got a few .32acp's & .25acp's, too, but they're really just range guns & novelties although they occasionally get carried. Be careful, small guns can be another form of the general firearms addiction.