Sometimes most cheesy ideas actually work. Look at this cute Heart Mouse device - I'm sure it'll get lots of props at your office. And if you think about it - who told all the gadgets need to be gray? It's weird how noone likes to use colors in the electronics world. So seeing this one really warms my heart. next big thing - heart shaped monitor. Please note for the next valentine:)

http://item.rakuten.co.jp/sastore/heart_mouse/