It's pretty simple: just post what object(s) are on the desk the computer you're at right now. If the computer isn't on a desk, just post what's around you.
I have: some Post-It notes, one of those glass cubes with a 3-D picture in it (mine is a violin), a basket of mint patties, a Mr. Burns figurine, some loose papers and magazines, a pile of Spongebob themed notes, some writing utencils, sissors, a Peanuts calander, a calculator, a Peanuts figurine, a Mario plush toy, and a bunch of computer games. Whew! And that's not even the shelf above my desk!