hot-wiring with office supplies
We had an critical email server running on a Dell box, unfortunately this model's power button was so poorly designed it wasn't up to the muscular fingers of the support team, or - eventually - the biro you needed to depress the damn thing.
After it completely gave up the ghost the only way to power down. the server was pull the power out, and the only way to power the thing back up again was to short out the connections to the power button using a specially shaped paper-clip.