As you renewed it, I'd add to...
1. looking for a free host service
2. Make it a blog, about anything
3. Have google adsense on all pages
this...
- Interlink your domains with direct liks to each other, but not reciprocal links.
- Get more external back links.
- Create/ improve your content
- Wait till you get some Google PR 2, 3, 4...
- List it here, sell on eBay by regular fee +fees as Starting Price.
You keep a good network of domains, recoup your expenses, get lots of experience when registering other domains.
Sure, there is more, but this covers the most.
HTH