I have been looking for a good charger accessory and found "Google Asus Nexus 7 Charger Cradle / Sync Desktop Dock" on the Amazon. The dock is designed to work with the Nexus 7.
When you do not use the tablet, rather than having it lie on your sofa or table, this is new way to store your device upright with this stand. It securely holds the device in portrait mode (180 degree).
There are some reviews saying the connector is on the wrong way and could not perform its task properly as the supplier. So I asked the seller Modern-Tech if that is the case, he replied to say it work fine with N7. After bought the stand/charger and use at home, my Nexus 7 charges, and docks perfectly on my Desk.