It looks like you'all are a little younger like us so there's lots of stuff. Looking at your blog, it looks like you're already doing some hiking and exploring which is high on our list! I speak from experience in saying that imagination is the only thing stopping you from being busy. We almost need to pull a trailer behind us for hobby stuff but we keep it all paired down in our space.
Just some suggestions of stuff you can do together or separate...
Metal detecting, shooting(my favorite), making jewelry(Brenda's favorite), genealogy for both of us, hiking/exploring, working out(me), happy hour :), cigars(me), walking our spoiled dogs, volunteering(Habitat, NRA Whittington Center, etc). We always keep our eyes open for stuff but we want to stay busy and active. There's already too many overweight people out there and we don't want to join them!!