I have the same dilemma, all the of the things I enjoy doing are mostly outside and I just can't do them right now.
my only suggestions are house projects that you've been thinking about but not actually doing - mostly because they probably aren't FUN projects. I have a list of those a mile long.
My mom told me that a bunch of hotels and resorts on Bora Bora closed and they never tore down the overwater bungalows, so i've been googling 'abandoned Bora Bora resorts 2020 - present' to kill the time.
sometimes i get up and stare out the windows, longing for warmer weather.
what if you plan out your next vacation? you don't have to have one actually planned, but it can be fun to think about where you might go next?