It's a wonderful habit to cultivate, isn't it?! I have a journal where I jot down little memories and fun incidents - it's amazing how funny some of them seem when I look back, and also helps me remember the quirky things they say!
I also keep a photo album, especially for family trips or special occasions. It helps that my phone automatically backs up to Google Photos, so I can quickly scroll through and pick out the best snaps without scrolling through the hundreds of screenshots and memes I have!
We also make it a point to have meal times and car rides as screen-free as possible. They're such simple but effective ways to have meaningful conversations, and I find that taking turns to share our days helps me remember the little things they do and say - often much more entertaining than my adult conversations! Plus, it encourages the kids to ask lots of questions, which is adorable.
We've also set specific 'no phone zones', like the playroom and the dinner table, though we're definitely still working on enforcing that consistently! It's a work in progress, but the benefits are obvious, especially when you see them replicate those habits.