I'm thinking water piks can make a great little coolant delivery system. As is, it's too high pressure, but if you cut the tip and open it up it will lower the pressure. I saw someone on freecycle offering one up, and I would never use someone elses water pik, but I would consider utilizing it if I had the need.
I don't know that it will work, but if you have one and are going to throw it out, consider using it for your NO MIST coolant delivery. You'll need to play with the tips, and possibly melt it more open even after cutting the fine tip off.