Most 1960s trolls were small, only about 3 inches tall (not counting their hair). Their size and variety made them ideal for collecting, which in turn necessitated the purchase of a carrying case, and there were many styles available.
Below are two of my favorites, both made by the Ideal Toy Company. The first is the basic model, while the second is the much rarer deluxe version, complete with a little cave and waterfall inside. Cozy!