The Illusion Series Calculator (<a class="link" rel="nofollow" href="http://www.epromos.com/category/1561.html">http://www.epromos.com/category/1561.html</a>) is a great promotional product that has a variety of different uses. They are great giveaways at trade shows, conferences, or given as corporate gifts. Being light-weighted they make great direct mail items as well. Watch how the colors change!
