Things I have learned to take too seriously since I started work:
1) Water -- I prefer Poland Spring, but most people order Fiji because it's more expensive and, as such, fancier. Fortunately one of my bosses prefers Poland Spring, so I just have to remember to steal it from his cases before they're delivered to his desk.
2) Pens -- When I settled into my job, I was saddled with the pens of my predecessor, "Precise v7 Roller Ball" pens that I do not like and which are super inky and make my handwriting illegible when I write really small. I've learned to deal with them, but it will be a significant change in quality of life when I'm able to pick out my own pens. Bic, of course. (Side Note: El Presidente uses these really crappy pens, like stolen-from-the-hotel-room pens, which I think is kind of adorable).
3) Chairs -- I'm convinced I have the crappiest chair of anyone in the office, bar none. All of the execs have those springy, mesh-backed chairs that are better for your back, but I also inherited my predecessor's chair, which -- as he was quite a bit larger than I am -- is too wide sort of crushed and padding-less. So about two months ago, I traded my chair for my intern's. Which is sad, since everyone else's chairs cost $1000 and I had to steal mine from our indentured servants.
4) Headset vs. Handset -- First, all of the employees had Bluetooth wireless headsets for their phone and all the temps (myself included) had to use the handset. Then all the other temps got headsets, and just when the temp who started just before me got hers and I was warming up to the idea of asking for one, the head of finance sent around an email saying no more headsets were being approved for anyone ever again. Now my neck hurts.