It seems like almost all sailors are tinkerers, inventors, closet boat designers. All of us are constantly trying to think of newer, better, faster, easier, more efficient (or more complicated), cheaper (which sometimes end up being more expensive) ways of doing things.

So what have you invented, or what would you like to see somebody invent -- related in some way to sailing, of course?

Just as a trivial example, I was thinking that for regattas that provide lunches to all the sailors on the water, it would be neat to have some kind of inexpensive, waterproof, floating container to put the individual lunches in, so lunches could be thrown to the sailors, and if it missed, no problem because it would float, and getting your lunch would turn into a man-overboard retrieval drill. (In this case the incentive would be hunger.) Maybe something made out of bubble-wrap?

And why can't somebody invent a mast flotation device that the serious sailors will accept?
Why can't somebody invent an anti-lightning device?
Why don't the wetsuit and drysuit manufacturers come up with products that allow for both men and women to eliminate without stripping? I'm sure the astronauts have this figured out somehow.
I invented the "auto-park" system to keep your boat in a parked position on the water so you can work on things -- especially useful for single-handers, but I would want it on any beach-cat. But nobody seems to be interested. That's the trouble with some inventions -- the inventor is the only one who cares about it.

I figure this is a thread that could go on forever.....

P.S. There is already a very long thread on various ways to make storage boxes for your trailer, so if you have something on that particular topic, you can add to that one.