Out of random google searching I happened upon a website called an artful home and found the most beautiful glass ornaments on their site.
They are a little pricey but they are meant to be displayed, on your tree of course, as a work of art. Each ornament is named and credit is given to the artist. Some of them would look great all year long if you had a safe place to display or hang them.
Can't you imagine these ornaments hanging on a big Christmas tree at MOMA?
The hot air balloon is my favorite!