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Winners
Solar Water Heater with Plastic Bottles
Homemade Mini USB Fridge DIY Frefrigerator Chiller Air Conditioner Peltier Cooler Thermoelectric by Foam Containers
Festive hanging wall candle
Thermoelectric Power Generation (TEG)
Green Power Solar Free Energy Generator Homemade for Electricity DIY Recharge Mobile
DIY Barrel Stove Outdoor Furnace
DIY Led Desk Lamp Solar Magnet Motor Free Energy Generator Homemade Mini Electricity
How To Wire / Terminate A UK 13A 3 Pin Plug
Multi-Fuel Generator - Gas Propane NG
Solar Water Heater
Homemade USB Chiller Fridge Frefrigerator Peltier DIY with Bag Cool Keeper Box
5 Gal Bucket Clothes Washer
Celda seca de hidrógeno
Diesel storage
DIY GLOWING PENCIL LEAD
Multiple Use Low Energy Fan
Making Biodiesel from Waste Vegetable Oil
Salvage reusable parts from CFL and reduce Carbon Footprint
Antique while you double insulate Windows
Adding Insulation to the exterior of my house.
Dryer Heat Recovery
Spray Foam Insulation
multiplicador de fuerza - power multiplier
Spring Loaded XC Retractable Spikes
Sunlight Director
Yard Barn electrical system
Smokin' Stove
DIY 400 Watt Wind Turbine
9 volt battery clip
Comparing Apples, Oranges, and Batteries
Cheap and Easy Fireplace Heater
DIY Wind Turbine
Attic Stair Cover
Hurricane Survival With a wind turbine
Shaky Leg Power Generator
Convert A PSU Into A Bench Power Supply
Super Powerful Battery Ducted Fan
Heating a jacuzzi for a dollar a year
mini boiler
Small Wind Turbine With LED
Crack the bottom of the beer bottle
How to Revive Old Lead Acid Batteries
Off-the-Grid Solar Wagon
Yet Another ATX Benchtop Power Supply
DIY Electric Water Heater Timer
Anemometer on the Cheap (Wind Speed Meter)
Science fair: How accurate is the AC line frequency?
Magnetic Motor Based On Power Difference
World's Simplest Motor
Inexpensive Mini Turbine
DIY Aircondition
How to rejuvenate air conditioners
DIY cheap and eco-friendly air condition unit concept
DIY : The Emergency And Rechargeable Fan For Summer.
How To Build A Simple ARC Welder.
active canadian well
Propeller For Homemade Wind Turbine
50 cent coin battery
My Vertical Axis Wind Tuebine
Diy Wind Turbine
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