if you have an older audience (high school and up) you could do sort of an offline version of an online game idea i had here: https://forum.inaturalist.org/t/if-anyone-is-interested-in-making-a-game/34440.
basically pick a location, get some of the observations or commonly observed organisms from a location, and then ask folks to guess where the observations came from. whoever guesses closest to the location wins.
i think this kind of activity would get folks thinking about the connections between organisms and habitat, which i think its important, and it might be fun as sort of a wrap-up activity after a day of exploring a particular park or something like that.