Here is a sidebar that I would classify as clean. It's simple in it's design, with a graphic above each category representing what each link brings you to. It's shades of blue also give it a clean, simple look, that is easy on the eye.
:Gmarellile Flat Icons Personally, I quite these icons. Because I think a nice icon will catch consumer attention. A well begun is half done. Also I think if you can design a good icon, your product would not too bad, lol