At work, our programming desk is made from the cheapest, ugliest, pink Chinese granite we sell and was made in house. They have terribly done seams. Our lunchroom table is also made of the same material. I built the desks in front of my machines out of two by fours and plywood. They are currently covered in doodles and cryptic messages understood only by me and my old coworker regarding cold beans, pickles, woodbugs, time, insanity and menstration. And a pretty wicked drawing of a dragon she did.
At home I have an IKEA desk.