Eco Focus, a one-night exhibition in Manhattan's Flatiron District, is showing off how everyday energy-guzzling devices can be designed to be more efficient, or take a simple upgrade to become more environmentally-friendly.

For example, the Microgreen Extended Performance Oil Filter, which costs about two to three times than a current oil filter does, is claimed by developers to save both the earth and money.

"It keeps the oil far cleaner than a conventional filter," says Miles Flamenbaum of SOMS Technologies. "So simply by keeping the oil very clean you can use it longer. So every 6,000 miles you just change the filter but not the oil. Over 24,000 miles, instead of eight filters you use four. And instead of eight oil changes you only have one."

Moving from the garage to your livingroom, TVs are getting greener thanks to more efficient light sources and more eco-friendly components.

Developers of OLED, or Organic Light Emitting Diode technology, say the new displays offer a sharper image and more vivid colors in a much thinner, eco-friendlier package.

"There aren't many materials that go into making an OLED compared to an LCD," says Janice Mahon of Universal Display Corporation. "Secondly, they're becoming extremely power-efficient through the use of new technology called phosphorescents, so by comparison to an LCD they consume about one-quarter as much power."

However, developers say that OLED displays do not last as long as LCDs or plasmas.

Finally, biking is easily the greenest way to get around town, but those who are not as fit to bike everywhere can rely on electric bikes like the Ultra Motor A2B.

"It's an electric bike powered by a lithium ion battery. It has a motor in the rear hub so you can use it as a traditional bike or you can just twist the throttle, engage the motor," says Chris Deyo of Ultra Motor. "This gives you the promise to go further with the aid of the motor, but you're using electric power which is much better than an internal combustion engine."

The Ultra Motor A2B costs about $3,000, which for now may cause some potential bikers to stick to their gas-guzzling vehicles.