i just take mine /out/. we live innawoods, so it's easy, but we go on hikes, go to the mountains, go to the beach, go to the snow, talk about animals, talk about rocks, talk about plants, dispersed camp, rock scramble, backpack, kayak...
the tricks are to remember you're moving at their pace, not yours, be enthusiastic about anything they're enthusiastic about, and don't push anything too hard.