My niece's husband is a drug rep/salesman. They give us bundles of pens for meds that bit the dust. Also sticky note pads, plastic tumblers, tote bags, etc... I see them about once a year, and still have much of the inventory from last year's visit.

Once at a wireless convention I got a Verizon Wireless pen that had a button on the end that vibrated when you held it down. I like the gel type pens but they leak in my purse and/or in the pencil holder.