I saw that you are a photographer. Alternately, how about putting your photos (with music in the background) on an iPod, if you have one? This would literally put you in the hands of your client. You could have the slideshow of your portfolio (an assortment) running along on the PC, but if you have a serious prospect, you could hand them an iPod and show them photos specifically (wedding/exec/etc) that they are interested in.


After the trade show, keep your iPod with you on a daily basis, so when you meet a prospect, you can not only hand them your business card, but you could show them a few of your photos.