This postal scale will only take a few minutes to put together, and allow you to do weight measurements for mail or other lightweight things.  The guide shows counter-weights as Indian coins, but you could obviously use any coins from your country so long as you know what they weigh.  Look around the site a bit, there are many more small projects that can be easily made and tons of DIY-type resources.

Okay, one more post about graffiti.  Here is a Flickr photoset going from start to finish to create a simple, graffiti style Jellyfish (fondly called Jelly).  It's helpful, especially for newer artists, to be able to see a piece from start to finish.

When working with any sort of electronic device interfaces, it can be difficult to figure out the pin assignments.  Pinouts.ru is here to help.  With pin assignments for nearly a thousand obsolete and modern pieces of hardware, this is a great way to save yourself the time and effort of figuring out pinouts on your own.  They have a wide variety of hardware including cellphones, A/V Equipment, Memory Cards, and more.

Ever wonder exactly how much electrical current it takes to kill a human? So have we, and it's probably a good thing to know before you go trying any projects that involve huge amounts of juice. Unless, of course, by juice you mean orange, in which case you'll probably be okay.

This handy page references a number of source's claims about how much electricity it takes to stop your ticker. Of course, people have been struck by lightening bolts and lived to tell the tale (that's a tens of thousands of amps), so it obviously varies by situation. The main thing to keep in mind is don't mess with it if you don't know what you're doing (and don't hold up antennas in a thunderstorm).