The periodic table is a work of art in itself, but putting a generic poster of the elements on your wall is a little uninspired. If you're looking for a particularly attractive way to display the elements, this Instructables creation is far more appealing.
You can even make your own lamp over by following the instructions, but it's not particularly easy -and you're going to have to spend some serious time and effort to get samples to fill in the jars. In fact, the one in the tutorial only has 20 samples so far.
Check out how to make make your own here.