Just saw this:
https://www.kickstarter.com/projects...-in-toothpaste

Toothpaste in small (one per brush) softgel pods.

I think that could be a nice thing for travel. Just pop 3-a-day in the 3-1-1 and no waste or "over carry"

Just the TSA would have to learn something new?

OTOH, the kickstart failed, I hope they'll market it anyway given the went through the hoops of patent and the other 4-6y of effort.