[wybo]

We also do this, but instead of flowers, we chose plants. Being a bit of a nature-geek myself, my desk is particularly green, but everyone who wants, has at least one desk-plant in our office:

http://wybowiersma.net/pub/academia-desk.jpg

We also have some plants that don't fit on desks, like this - name says it all - elephant-ear plant:

http://wybowiersma.net/pub/academia-plant.jpg

We (http://Academia.edu) got them all from the plant-warehouse in downtown SF:

http://www.yelp.com/biz/plant-warehouse-san-francisco