Some neat things I’ve done recently:

• A dice rolling shell, because I forgot to bring dice once for DnD.
• A web interface for administrating ICAT data, because the ‘official’ application was a pain to use at work.

Some of the projects I’ve worked on which are reasonably complete:

• Unruly Reviews, a site for quick board game reviews.
• Arboretum server and web client. Pretty hacked together, not well tested, and still WIP, but a functional way to play arboretum over the internet.
• Mandelbrot rendering with Canvas.

Check out my github for other work in various stages of completion and (mostly) abandonment.