I always end up making little projects to visualize data, try to calculate something obscure, or just to have some fun in the wintertime. Here are several of my favorite projects, and I have many more on Github.
Some maps I generated with Google Maps Directions and Geocoding APIs
A diagram of the world's Airmail networks
My first photo gallery - "This Is The Nepal I Want The World To Know"
A tiny advocacy project for the children of Iraq
My fun christmas lights show that made Hackaday!
A multiyear aerodynamics simulation pet project