Reunion Time

This year I'm in charge of my family reunion. There will be 29 of us and we are going to CO. I've been racking my brain for months for fun things to do together that are memorable. We have some fun things planned, but I sure would love any last minute suggestions, ideas, thoughts...of things to do (it's this labor day weekend). Any fun outdoor games or activites. Anything that you have done and loved. So send them ASAP!! (I know I should've done this sooner!) Thanks in advance.