Top Kindle accessories include Moko case, PopSockets PopGrips, Strapsicle hand strap, and Lamicall holders for better reading comfort.

Santa Monica: Moko makes a soft Kindle case with nice details on the cover. It has both a kickstand and a strap so you can easily hold it or prop it up.
Seattle: PopSockets has new Kindle cases with built-in magnetic attachments. You can add a PopGrip if you want. The Bookish designs are fun to look at.
San Francisco: Strapsicle makes a silicone hand strap that is super simple to use. Pull it over opposite corners and you are done. No sticky stuff or magnets needed.
Denver: The Lamicall goose-neck holder works for Kindles and tablets. You can attach it to tables and furniture. Position it in front of you or even above you.
New York: A page turner is the hottest new item for Kindle lovers. They help when your hands are not on the device. Reading becomes very comfortable this way.