Instructables has a step-by-step for turning a regular old landline phone into a VoIP phone.
This hack requires a little bit of electronic hobbist kinda soldering and might not be for the novice hardware tweaker, but the results look quite good. If you've been wanting to try out Skype but haven't wanted to [...]

1) Hard Drive Laser Oscilloscope

2) Hard Drive Clock

3) Hard Drive Speakers 

4) Hard Drive Generator 

5) Hard Drive Wind Chimes

Alan Parekh over at Hacked Gadgets has compiled a list of the top five projects for a dead hard drive. This is a nice comprehensive list for those tech junkies with some time to kill [...]