For those moments when you feel an uncontrollable urge to irrigate your nose.

Well, it’s not really a teapot, but you could probably fashion a small teapot to be just as effective. On a serious note, I’ve seen this in action in India – with much more primitive, non-branded equipment – and practitioners say it really helps them cope with the nasty side effects of air pollution. The Mayo Clinic has a good instructional video for those who want to learn more.