The Guitar design is a spinning guitar, with your choice of images and text on its front and back. Common choice: a picture of someone on the front, and the text 'you rock' on the back. The guitar is from the Blender Model Repository, and was originally created by Sebi as far as I can tell.
If you are using a phone or tablet, you might be more comfortable with a gesture-based version of this page. This is experimental.
If you have trouble on an older computer, try using an alternative version.
This is a 400x300 design, with 800x600 available to subscribers.
The design is made using Blender, a free and open source 3D animation suite.