Many minimalists borrow books from the library or use an e reader to prevent clutter.
Journaling on a computer or handheld device can be therapeutic and minimalist.
Start a small herb or veggie garden if you prefer to be outside. Nurturing plants could be therapeutic during these stressful times.
Create digital scrapbooks to get all those photos in boxes or in your digital library organized.
Find a cheap camera on eBay or Craigslist and practice taking photos of your life. Check youtube for beginning photography lessons and invest in a good app for photo editing!