--- Mainstream projects
Other Android Projects - apps for Android - Where Am I?, etc.
WhereTo.org — social database of local destinations - hiking, biking, camping - member editable wiki-descriptions, tags, etc.
Tire Size Calculator with links to actual tires on TireRack.com. Helpful if you want to change wheel size and/or ratio.
Some ideas that seemed interesting to me at one time or another.
Web interface to RIPN whois database.