DIY Seed Pots
Why buy seed pots and trays when there are a lot of options available to start seeds? The treehugger.com has a cool post on how to make DIY seed pots from 7 household items. See that!
Plastic Bottle Mini Greenhouse
Plastic bottles are of no use but you can recycle and transform them into mini greenhouses to grow seedlings. To learn everything about this project in detail, visit Container Gardening.