Assuming most IHers are working on software projects, what is your current application stack? Are you learning something new? What do you like/dislike?
A Node-based message queue hosted on Heroku
The only new thing for me is React. At my day job I work on an enormous AngularJS application. It took me a long time to get good at Angular due to all of its idiosyncrasies, so I was shocked at how quickly I was able to become productive in React.
EDIT: I am really excited to see all the variety here! I was totally expecting a bunch of the same stuff but clearly you all are not zeitgeist zombies.