Handmade, individual ice cream that guests can make in their hotel room! Just add ice.
Comes with printable tags (including directions) and can serve as escort cards.
I am lactose intolerant, but I have half a brain to try this (and have FI do the taste test). Then people can reuse the jars at home.
http://www.stylemepretty.com/2010/06/14/diy-ice-cream-in-a-jar-by-city-cradle-design/