Small balcony grill
Foil Solar Panels for Windows (VERY Easy) Build one an hour!
Survival Tip: Use large bubble wrap to insulate old windows during cold winter storms.
Wind generator motor information and guide. What you need to know about wind generator motors for DIY and kitset wind turbines.
Tiny Yellow Teardrop: Featured Teardrop Trailer: Vistabule
4x4 caravans - Google Search
A DIY RC car. Scaled down, this is a perfect project for two little boys.
solar-thermal electric generator http://calgary.isgreen.ca/living/kids/natural-ways-cleanse-kids/
geo-thermal info website