I don't know if any of you have one but I find my compressor really bloody useful, I can check my tyre pressures at any time with an accurate gauge, clean any other tools with the blow-gun (very handy) and the best one is clean all the gaps and spaces in my car interior that I can't get with the hoover, just open the doors and blow out the dust and ****e that collects there, double great!

Nearly forgot, its also handy to blow water out of water traps after washing the car, the ones that always show themselves afer you have finished leathering off....