Obsessively completing 'dex entries to Perfect, at least for those Pokémon I can easily find in Obsidian Fieldlands. Although the sheer number of move uses for Umbreon suggests I might not continue in this manner, I find it a lot more satisfying than grinding through Dynamax Adventures in Sword (its the rental Pokémon, I don't want to have to pay this much attention grinding!). I think I've sunk about 25hrs into this game and only just unlocked Crimson Mirelands, but I'm Lv. 5 and my 3 HOME gift starters are in the high lv. 30s! Had some great luck - after a Buizel outbreak last night, I got my first ever space-time distortion today (caught 20 in it), followed by another Buizel outbreak which I fought through with my two Luxio - 4v1 when you're the same level is very dicey!
After getting the shiny Ponyta (saved in the wrong place so stuck with Lax), I encountered my first overworld shiny, a Bidoof! I decided to try out my new Feather Ball on it.,,,nissed, and it ran away into the bushes. I'm not good at this game haha