Maybe you've created your own AR program for wearables that shows the definition of a word when you highlight it IRL, or you've built a personal calendar app for your family to display on a monitor in the kitchen. Whatever it is, I'd love to hear it.
Small scale stuff but I've wanted context sensitive snippets in my editor for a while now and i was able to make it work recently with treesitter and ultisnips in neovim.