WouterAir pump 5V - 12VPerfect. Good quality and delivered within 1 day. I have added Opencircuit to my favourites.
Anonymous5V / 12V Waterpump 240L/HWorks perfectly on 12 volts, I couldn't get it to work with 5 volts. The packaging also only says 12 volts, so that may be an error in the description. A good service!
Laura HaaimaElectric solenoid door lock 12VDCI have it working, but it interferes great with the Sparkfun relay. Or the relay does not switch strongly enough on an Arduino output of 3 volts