I've bought a lot of Tenyo stuff through the years, mostly just out of curiousity. Most of it is way overpriced for what you get...which is a piece of injection molded plastic that cost pennies to make and cheap labor to assemble (if it has moving parts).
Tenyo has patented a bunch of their magic and you can view these patents and learn the secrets by searching Google patents, just type in 'Tenyo'. Note that these tricks are not listed by the name on the package, that's not how the patent office works. www.google.com/patents
There's TONS of patented magic over there if you've got some time on your hands.