Armor Active, one of several successful ventures to emerge from the Foundry, makes iPad kiosks used by companies such as Virgin, Amazon, Estee Lauder, BMW, ING, and Unknwn Store, LeBron James's high-end sneaker shop in Miami.
Here's a shot of Lebron James's Unknwn shoe display in Miami. Those are Armor's iPad enclosures.
Armor offers a range of iPad support products. Spectra is a minimal acrylic enclosure designed to fade into the background--and keep eyeballs on the iPad itself.