MAKE YOUR OWN GADGETS, OR GET REAL ESTATE INFO

  • www.scitoys.com: A tinkerer’s delight. Buy some gallium and cast it into whatever shape you want, then give it to somebody and watch it melt in their hand. The site shows you how to make dozens of gadgets, and with each one you learn something along the way. For instance, you can make a high-voltage alarm in five minutes using a couple of Coke cans and some aluminum foil.

Trulia.com

  • www.trulia.com: A handy real estate search engine with “heat” maps that color in the most expensive or popular areas in red, and cooler regions in yellow or green. Type in a ZIP code and get a list of everything for sale, with thumbnail photos. You can see if a home is considered expensive for its ZIP code or compare it to other neighborhoods in the area. Some listings have detailed price histories going back five years.

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