If you don’t like Rembrandt toothpaste but want to use their 3 oz tube, you could empty it and then refill it using vinyl tubing from the hardware store:

http://www.youtube.com/watch?v=3tvDCl4EFdw

Beauty supply stores have lots of products in 3 oz and 100 ml (3.4 oz) sizes. I chose a 100 ml shampoo bottle I liked, dumped the contents, and refilled it with my preferred brand. They also have conditioner, lotion, and other products in those sizes.

Another travel size products website is alltravelsizes.com. Sometimes they have items minimus and 3floz don’t.

Drugstore.com has the 3 oz Rembrandt and 3.4 oz Kiss My Face toothpaste tubes. The Kiss My Face 3.4 oz is also on amazon:

http://www.amazon.com/Kiss-My-Face-T.../dp/B0015N4TBM