I'm fortunate to have a little time on my hands for the next few months and then will be home and glued to the sofa with a newborn.
So! I'm rethinking my hobbies/what I like to do in my spare time (currently swimming, gardening, reading, occasionally yoga and Pilates) and have decided that in addition to these I want to learn about something new!
I used to do this a lot: pick a subject, or come across something that piqued my interest, and then learn about it. But I haven't done that for ages so I'm giving myself a kick up the bum to get back to it.
I've just started a British Sign Language course online, and am thinking of doing a recreational maths course on FutureLearn, both just for the fun of it and to force my brain to do something, but I want at least one more! 
So interesting people of MN - what are you learning about at the moment? The more unusual or quirky or oddball, the better!