I keep up with technology and am constantly learning, have games and word puzzles on my phone that I play every day.
I’ve always been a list person and that hasn’t changed. Now though I have specific apps on my phone for different things that I need to make a list of, like AnyList for groceries, Notes app for general To Dos, Reminders for repeat monthly things like the dogs’ flea, tick and heart worm medications etc.
Another thing I’ve always done.  If I suddenly remember something that needs to go on a list and I’m not where my phone is, I’ll grab the nearest item and toss it on the floor. The association of that item to what I need to jot down helps me remember what it was!