I do! I write down prompts that involve drawing pictures and writing things down that I've found online or print them out, then I do them when I'm little. A couple examples are: "your favorite stuffies have turned into humans! draw what they look like, list their traits, and plan a playdate with them!" or "design a fairy garden!" You could also decorate it with stickers or make a sensory page with different fabrics and tactile things glued in.
Another thing I personally like is to make my own rules and routines while I'm big since I don't have a caregiver. I also put in things like "task bingo" or "mood trackers" to keep myself organized and productive even when I'm not regressed or just age dreaming.
You could definitely journal about your experiences while regressed. I like to call mine "tiny time" just because I like cute and short phrases while I'm little. I hope this helped even just a little bit!