We used a giant four-ounce Hershey bar as a trade show giveaway. You see bowls of free candy at trade show booths, but they're small portions. This was huge: a solid four ounces of chocolate. Everyone, including competitors, wanted one, and they flocked to our booth.

The message on the chocolate said: "SURGEON GENERAL'S WARNING: Eating this chocolate may cause fatigue, blurred vision, and an extreme craving to work with CareerLab." The cost was less than one dollar each because we bought in bulk. In addition, there's no waste: you eat the leftovers.