Even if a retail has the seemingly perfect total cable solution for your workspace, you might lose momentum or experience sticker shock in obtaining it. Reach into your supplies and try out a nearly free solution first.
Kevin Kelly's Cool Tools blog suggests a simple magnet and binder clip setup for running four cables along a desk. It's a snug but flexible fit, and for those who have the items and a bit of adhesive sitting around, it's a free trial. See what works for your desk, where your cables fit, and determine whether you like the idea of bundled cables before investing in a "tricked-out, fancy-pants Kickstarter-funded designer-esque iteration".. Plus, as noted in the post, you can use the binder clip handles for storing notes. Binder clips -- is there anything they can't do?
Cheap Cable/Cord Control [Cool Tools]