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Use this lightweight burner to clear weeds and their roots in driveways or walkways in summer, or to melt dangerous ice patches in winter. Adjustable regulator valve lets you control flame intensity. Durable, nickel-plated steel and brass burner uses widely available standard 14 oz. propane tank (not included).

These aren't new though: here's a heavier duty unit and a video demonstration of another one in action (although not on weeds, but whatever - you get the idea).

Would it safe to say that people that use these probably aren't the same people that sit on these?

Weed Burner at Amazon.com

Via Toolspotting]]> http://www.househacker.com/permanent/eXtreme-Gardening-via-Weed-Burners EcoSmart produces these unique, flueless fireplaces that can be installed essentially anywhere, as they do not require any sort of permanent fixture or fitting. The company makes many different 'shells' that house the actual burner unit which operates using a green fuel. From the site:

The EcoSmart Fire is fuelled by a renewable energy source called Denatured Ethanol. Ethanol is an absolute alcohol, produced by the fermentation of sugars originating from agricultural and forestry products; mainly sugarcane, potatoes, bananas, beetroot and recently from cereals such as wheat.

What are EcoSmart Fires? The EcoSmart Fire is a new, innovative style of open fireplace. It is environmentally friendly, aesthetically appealing, efficient and cost effective. The modular design means it is versatile enough to fit into a wide range of architectural environments. Whether installed in a loft, studio, apartment, terrace house or freestanding home, the EcoSmart Fire provides the 'primal' warmth and comfort of fire while enhancing the contemporary aesthetics of today's living environments. In essence, it is designed to be an inspiring, mobile 'piece of furniture'.

And yes, according to the FAQ, the fireplaces do indeed produce heat (about 13000BTU's worth).]]> http://www.househacker.com/permanent/Beautiful-Environmentally-Friendly-Flueless-Fireplaces-by-EcoSmart light that activates during an emergency. In case of fire, the unit communicates with other like units to illuminate an escape route through your home. The unit is powered by your home's electrical power, yet doesn't rely on it. Instead, the device employs a long life emergency back up battery that activates during an alarm. Now if it only had a wifi notification system...]]> http://www.househacker.com/permanent/Interesting-Combination-Smoke-Alarm-Emergency-Light candle wax and stuffed the mixture in an old cigar tube to create a one of a kind product - Java Log. The Java Log burns cleaner and brighter than other manufactured logs, is easier on the environment, smells nice, manages to leave less soot buildup in the chimney, and, according to the FAQ, "has about 25% more energy than wood and triple the flame per unit of energy."]]> http://www.househacker.com/permanent/Java-Log-is-Recycled-Coffee-Grounds Firewall Flueless' lack of a heat-liberating chimney like those found in conventional gas fireplaces. There is also an added environmental benefit in that the warm air the unit exhausts is cleaner than the air it takes in! ]]> http://www.househacker.com/permanent/Beautiful-Wall-Mountable-Flueless-Fireplace