From DIY Solar Scooters to Solar Powered WiFi Hotspots to Hand-Powered iPods, Treehugger has always been fond of DIY eco-tech. Now we are looking for your eco-tech inventions. If you have hacked, modified, or created something that helps current technology conserve energy, we want to know. Send a picture of your creation and a quick description of what it is to: contest [at] treehugger [dot] com. We will pick the best submissions and let the readers vote for the most deserving one. The winning submission will receive a new $230 Voltaic Systems backpack!!! In addition, our friends at Make Magazine will throw in a 2 year subscription and a limited edition MAKE T-shirt! You have until September 15th, 2005 to submit your entry. Link.