Here are some ways I like to add spice to my day:
-Keep track of exactly what time it is so when I answer the phone I am painfully accurate in saying "Good Morning" or "Good Afternoon"
-Waiting as long as I possibly can to take my lunch so the afternoon is shorter
-Putting off my filing, forgetting about it until about 4:50 and then all of a sudden waking up out of my trying-to-hide-the-fact-that-I'm-not-doing-anything stupor and going "Crap! I have all this filing to do still! I must rush!" And then rushing to get it all done and realizing that it still only really takes about 4 minutes and still having time to spare before going home.
Hey look, it's almost time for that.