Obviously the security of needed equipment is a consideration, so you'll want to place equipment where staff or volunteers can see it. Consider the registration area or inside the doors people enter for banquets. Change the tapes sometimes so attendees can look forward to new experiences. Huge enlargements of the cards are projected on the walls and constantly changing. When attendees find their person, they can return to get a new card for a different person.
People can use roving mikes to ask for help in finding their person.
As attendees mingle, a singer's song list naturally features chocolate and athletic themes. All attendees who fill out forms are eligible to have their photo taken for their own two-sided MVP Player card, enlarged to poster size. The poster of the attendee who is most written up by his or her colleagues is blown up to wall size and mounted on a wall the last day of the convention, when the person's name is announced with game music in the background and a rally squad dancing to celebrate. Before the convention even starts, lay out a post-meeting newsletter filled with comments the speakers will offer, awards announcements, and news of important dates. Include actions such as signing up for the next meeting or volunteering for a committee.