Some may consider a bit old school (or oldskool, depending on your age), but I find some unique home decor items on their website from time to time. Have an open mind, sometimes the places where you least expect to find something great is where you really do.
For instance, Spiegel has a fantastic selection of with graphical shades that speak very much to the patterned shade/solid base trend we've been seeing. Since shades are so easy to swap out, it's actually a great idea to purchase a lamp base you love and simply swap out the shade from time to time, alternating between patterns and solids, to give your space an all new look. Spiegel also has some nice and these fabulous for adding the perfect touch of sparkle.
(images from spiegel)