I need a goog gimmick for a trade show.  My company sells arts and
crafts supplies.  Need a clever giveaway, project, game, incentive,
etc.  I'm not looking for something from an incentive catalog, looking
for something on a higher level.  In the past, we have attached numers
on business card-like cards.  Find the person with the matching
number, and you win a prize.  This worked well, as it keeps your name
in people's focus all day.  I'm looking for something on the same
level.
I'm looking for a list, don't really care about the length, just need
one great idea.

I have been to many trade shows as an exibitor and the one thing that
gets your name out there above all is giving kids a helium balloon
with your name and what you do printed on both sides. not only is it
cheap but you get a line up of kids and parents, and your balloons are
everywhere, on the cieling, going up and down the isles, kids trying
to get them off the cieling with long strings on balloons with tape
turned inside out stuck to their balloons, its an in your face name
gimmick and it works.

Food! That always gets attention!