Springwise has a nice year end review of the top ten eco business ideas of 2006 for anyone who hasn't seen this yet. Here's a quick run-down.

1. hybrid cars.
2. Consumer generated power through wind turbines.
3. Household recycling plants.
4. Green rental cars.
5. Sustainable fashion.
6. Innovative olive farmers.
7. Retail recycling.
8. Trading text messages for carbon offsets.
9. Environmental friendly cleaning companies.
10. A sustainable dance club.

Spotted at Renewable Energy.