Good books (especially fiction)
(Alternate: go spend an hour or two exploring a bookstore, bonus points for a section/genre you’ve never read before).
Learn to play an instrument or pick up a new skill
Spend time outside - context doesn’t matter: walk for an hour (with no planned destination)… do something active (hike, row, ski, swim, sports league, w/e)… just sit somewhere for half an hour without looking at your phone and listen to every sound you hear. Do it daily
Go to a museum or botanical garden
Call a friend or family member, and set up a recurring date to connect with that person every month
Try your hand at art, or another creative endeavor
Pour a very large cup of coffee and open Wikipedia (or Wikistr). Search for an article on something that sparks your curiosity. Click a link somewhere in the article. Read the new article at that link. Click another. Refill and repeat
Hope these help to fill your day and expand your soul 🤙