There seems to be a great divide in the world of office supplies—pens vs. pencils. We're going to take a guess that the majority of you out there write in pen, but there are sure to be some dedicated pencil lovers in the bunch. Alternately, we're betting that some of you use each for very specific things (pencils only for crosswords and sudoku, please!) Regardless of your writing utensil of choice, there are tons of fun, quirky options out there to make your desk more fun. Here are our 21 favorites! And don't forget to tell us where you stand on the great divide in the comments.