If you are looking for a great pill and supplement storage container which has large bins and is sturdy enough for travel, you should consider getting craft storage containers. The container which I love is by CraftMates and was purchased about four years ago from Michaels Arts and Crafts. This container can be found on Amazon:

Here is the company description of the product:

APOTHECARY PRODUCTS-CraftMates Lockables: Organizers. Build your own customized storage system! Whatever your craft of choice with Lockables Organizers you can keep everything neat and tidy and right at hand when you need it. Just choose your storage case and individual organizers based on your specific organizing needs. The patented lockbar system of the organizers allows you to open one bin at a time so there is no bin spillage or migration! Perfect for brads; beads; buttons; sequins; needles; pins; embellishments and more! This package contains one 14 compartment clear plastic organizer (1-1/4x9x4-1/4in) with purple lockbar. Imported.

I have used many different types of pill organizers and have been unimpressed by all of them. The rotating organizers seem to rotate too much when in a bag, spilling the contents, screwtop containers and towers unscrew in bags, and the rectangular organizers have lids which either pop open or break after prolonged use. The CraftMates container is a stark exception. In order to open a bin, you have to press a latch at the end. I find this mechanism superior to the locking pill organizers I have seen. Apparently beads and buttons are deemed more precious than supplements!

I have used this organizer every day for the last four years and have traveled with it, completely incident free. I swear by these containers and think everyone who takes a lot of supplements should be using these.