Have guests write little guest book notes to you on the sides of Jenga blocks to build up a tower of love. This is exactly what Devon and Michelle did at their pirate-themed wedding at a bowling alley. A game guest book fit like a glove.
Choose permanent markers (like Sharpies) in your wedding colors or ALL THE COLORS, and have enough Jenga sets to accommodate your guest list. There are even specialty sets like this Nightmare Before Christmas set. Then it's Jenga time!