👋 There are so many things to do for free.

Take a walk in nature, if it's in walking distance - or cycling, if you have a bicycle. If you don't, can you find a beaten-up old bike somewhere (local recycling station?) and fix it? Internet is full of instructions on fixing bikes. Get Duolingo and start learning a foreign language. Install a new operating system (Linux runs on Mac hardware too. If you're on Linux already, check out some flavor of BSD). Learn some coding, or a new programming language. Take some online course on Coursera or such. Call your mom on phone and ask about something old-fashioned she's good at (how to make saurekraut, or such), then try it out. Take up gardening. Repair something - take a stock of tools available and be creative. Install LineageOS on your phone, if supported. Music is free on YouTube and adblockers are free to - find a new music genre - if you can sing, imagine how difficult it must be to sing Magnificat by Arvo Pärt cleanly, in tune. Find an old Android phone, install Termux or Nix-on-droid and set it up as a free, low-power-consumption webserver with a built-in UPS. Listen to Orff's Catulli Carmina and read lyrics+translation in parallel (hoo boy, these Latins were a wild folk). Take up woodworking, if you have scrap lumber - build a bird feeder out of scap boards, perhaps a shipping pallet or such - again, basic tools cost a couple of lunches, and if that's out of reach - there actually exist people who practise flintknapping, and you can find instructional videos online. Take apart the siphon below your sink and clean it so water would drain faster. Read a book on https://gutenberg.org - they're all free and legal. Or find where z-lib has hidden itself, books over there are free too, though less legal. Start growing sourdough culture - it'll take a week or so until it's ready for baking.

Hoo boy, I wish I had time for everything that's interesting to me.