If, my fantasy begins, perhaps, my company permitted, or even encouraged full-out cubicle customization, these would be a few of my picks:
CB2 desk & Ikea file cabinet, for a touch of the clean & modern. Plenty of space to spread out on the desk, but a great place to store all of the junk underneath it.
Comfy Pottery Barn desk chair, a perfect blend of the old with the modern desk. (Please note, craigslist.org is also a great source of these chairs!)
Fun desk accessories from See Jane Work & Bell'occhio to add a little color to the cubicle:
And wouldn't this Room&Board chair (maybe in a red/pink wool fabric) be fabulous to settle into on those afternoons when you just want to put your feet up to work?