Baumgarten's Clip 'N Hook Partition Fasteners
They rock. You could probably also use a Hercules hook, though I haven't trie...more
These are awesome if you have fabric partition walls, like I do, and want to hang some art in your cube space. I have a sunburst mirror from Pier1 hanging on one. You could also do picture frames or some other wall art. They rock. You could probably also use a Hercules hook, though I haven't tried it. I like the double reinforcement these hooks offer, and they were also specifically designed for cubicles.
These are brilliant! Made specifically for paneled, fabric walls.