[racket] Project Ideas

I'm interested in acquiring experience using racket to solve real
world problems as opposed to the SICP bookwork I've been doing lately.
 Does anyone have any ideas for medium sized projects?  Extra points
for things that could be useful to others in the community.

I wanted to check out the first link of this search, but it appears
that the mailing list archive has changed:
http://www.google.com/search?q=PLT+projects+waiting+for+contributors

Thanks in advance,
Joe