Rhythmic Wiper

These windshieldwipers move rhythmicly to your music. They might do a simple to- the-beat wipe, or stop and go wipes, maybe with a swing. Naturally, the main function of the wipers (keeping your windshield clear, fyi) should not be interfered with. And they should not run dry, giving off that horrible noise. The answer can lie in (a combination of) two solutions: - bpm control with rainsensor input - lift the wipers (by hovercraft type hovering or actual lifting, as described in other half baked ideas here).

BPM control might not be enough: You can only do so much with BPM control to music, before it gets really weird. So there should be a margin, like 75%-133% and outside of that margin, a new song is selected. Ideally, the BPM of the new song should be chosen by estimating the rate of change in rain (or bugs or whatever reason your rain sensor tells your wipers to wipe).

It would make driving in hard rain a very interesting experience, though probably not a safe one. Therefore, the rhythmic wipers should only dance, when there is not so much rain. I call for research.