My, now retired, colleague "won" a vibrator at an Ann Summers party some years ago. She was a very keen gardener and had a greenhouse with a lot of very expensive and delicate plants that only required minimal watering. So she hooked up the vibrator to an inverted plastic drinks bottle filled with water; pierced a small hole in the end of the bottle and then switched the vibrator on. Result was that several plants received a light shower of droplets of water for as long as the battery on the vibrator held out. Pity it was bright pink, otherwise you'd never have noticed it!