This is you're spring time reminder to clean off you're desk, clean out your inbox and take a look at the office to remove any unused or broken equipment and supplies. 5S (Sort, Simplify, Sweep, Standardize, Sustain) improves morale and increases efficiency.
If you'd like to take a look at the fun side of office efficiency from the corporate side of things go over to Pimp my Work. A lot of it is tongue and cheek but they've also got some good ideas (no affiliation - I just liked the site).
The picture below has nothing to do with 5S - my friend decided to plow the pond with his truck! In the end it took 9500lbs worth of wench to get him out. Good fun.