What about learning another language? I've had a lot of fun with
$1 The site has its own audio and NVDA works well with most of it.
There are audio games available and you can still play some fighting games.
Audio books, writing... those don't require braille. I don't know, just throwing out ideas. I really feel ya on the boredom. It's raining today and I've done absolutely nothing but listen to music in bed.