These are several projects and drafts which I like more than the others due to various subjective reasons.
Automated canteen queue length measurement using Detectron from Facebook..
StarTrek game telegram bot.
QR rubik's cube.
Think and draw outside of your tab :).
Mining places and paths of interest from the dataset of geo-tagged photos.
3D-visualizations of several Conway's Life patterns evolving in time.
Intranet communications mining.
[Wolfram VS Peano]
The interactive visualization of Wolfram automata's mapping into Peano curve.
Reverse-engineering and patching Verbarius clock.
Realtime search for images based on speech recognition.
There are many more projects (with short descriptions) on the other projects page.