The 72$ Computer

Before you get too excited, this computer isn't the solution to replacing your wonderful quad-core computer. This cheap, compact micro machine is, however, worth building. By a couple of jumps and comparisons from different computer part selling websites and looking for inexpensive parts and solutions, this computer pops a record for a very cheap computer. I know some of this rely's on salvaged parts, you can't jump over very much more. Its worth a look, even if it is only going to be for looking at internet sites in the kitchen!
http://www.popsci.com/popsci/how20/157a2ea4fc033110vgnvcm1000004eecbccdrcrd.html