For my new blog theme I created a 3D RSS icon (seen crashing into your right hand side). Making a 3D RSS icon for your blog can quickly be done using the technique I'll describe below. For this tutorial we'll be using Photoshop & ZBrush.

Overview: ZBrush, then Photoshop

We'll use ZBrush to create basic 3D shape of the RSS box. Then with a high resolution image of the symbol (the two lines and the dot) we will "stamp" it into the model to create the displacement & texture. ZBrush's rendering engine can then create a nice quality image. And finally, we'll bring it into Photoshop to enhance the color and make the transparent background.