There should be some sort of limit, really, to decorating your desk. The woman two desks behind me has feng shui-d her desk, which, fine, we all think you're a bit silly, but go for it. This latest though, she has, over the weekend, brought in a 3 foot tall bodhisattva and perched it on her desk. It looks sort of like this:
Is this really necessary for the flow of your chi? It's not even a very pretty one, just some hollow ceramic thing, painted to look like its stone. It's just so huge!
We (myself and others who sit next to her), may or may not have moved things, thus un-shui-ing her desk. This was (almost entirely) unintentional. We were curious, and like curious monkeys, we must touch!
Edit: And I may or may not have made it a little paper crown.
Edit 2: And a cape.