For my Simple Touch I really enjoy the rooCASE:
The easel stand works great for hands-free reading. It's real leather and has held up very well through two years of daily use. I belive the new white Glowlight would fit in the same cover.
I like mine so much I bought a spare; but if you want one try to get it soon. All the NST merchandise seems to be going out of stock.
Someone on an earlier thread mentioned trying the Glowlight in a regular ST case, so yesterday while I was in the store, I slipped my new Glowlight into one of the ST quote cases--$15 on sale. Although it was not as snug fitting as it would be on a ST, it seemed to fit the Glowlight pretty well. I'm searching for my old, secondary ST cover.