CMF
WKR
One thing we do with ours(7,9,12) is have a scavenger type hunt. Deer tracks, a scrape or rub, mushroom, butterfly, whatever is expected in the area we are in. The less likely it is the higher the point value(determined by me/wife). At the end they end they add it all up to see who wins and we give them 5$ or something to spend at dollar store.
We also run trail cameras and that gets them excited to see what is on them.
We also run trail cameras and that gets them excited to see what is on them.