As important as they are, routers and modems aren't the prettiest objects to look at. Keep them from cluttering up the view with their constantly blinking lights with a simple magazine storage box.
The photos above from Design O.C.D. pretty much say it all. It's even easier to do than using a book cover to camouflage your router or hiding it in an old radio, and might provide a bit more airflow depending on the size of your router.
Equipment Organisation [Design O.C.D.]