A toy CNC machine constructed from parts taken from diverse discarded electronic equipment.

-Two old drawer sliders.
-A threaded rod.
-A medium size stepper motor from a laser printer.
-The complete carriage from a ink jet printer.
-The Z axis is from a cd-rom drive.
-Motors are driven by 3 reprap stepper boards.
-The BOB card design is from pminmo.com

With luck you can build something like this for less than 60€, including the electronics.
The precision is quite good.
Built as an exercise to start learning CNC machinery.