Pixel hobby is a mini-mosaic craft. This is a kit I bought last year from pixelhobby.com.au.
It took about 8 hours per base plate, so about 48 hours all up. It's lots of fun, you have to look at it from a few steps back to really appreciate the picture, but I plan to do some more. I've got a half-completed kit I bought years ago that I need to finish, and I plan to get one made up for TimCat.