Tip number 54 in the book is how to make toothpaste "dots" by drying stuff out of the tube yourself. But look what I just found (thanks Clayton)! Linked HERE.
Archtek's Toothpaste Tablets are a chewable tablet that replaces paste in a tube and creates an incredibly clean feeling mouth. The tablet is placed in the mouth, chewed, followed by normal brushing and rinsing. Chew, brush, go! Travel-friendly Toothpaste Tablets are lightweight, more sanitary than toothpaste and the packaging is recyclable. Less mess, less weight, more green, more sanitary.