You can trim your coax TV cable, and you can trim your ethernet cable. Since these cables tend to stay in one place, hacking them to fit makes sense for taming the cable monster behind your TV or desk. When it comes to USB cables though, it seems that they are always way too long. Especially since you need to store them more often than use them, not to mention the two things that they are connecting tend to be right beside each other. With this Instructables hack you can get a practical and retro looking USB cable, all you need is a USB cable to chop up and a phone handset cord.
Check out the step by step instructions here