This may not be exactly what you expect from the theme ‘Green Tech’, but hey why not? Have a look the pics below showing some very effective use of old PC hardware:

An old CD-rom drive becomes a salami cutting tool:

An old mouse becomes a toothbrush holder:

An old 14″ monitor becomes a hamster cage:

A spinning knife sharpening machine thingy!:

A drink cooling fan:

An old PC tower case becomes a bird feeder:

And possibly a pair of shoes!:

[via Dark Roasted Blend]