I think one of the best things my husband and I continue to do is to make sure that our kids aren't dependant on electronics. Our kids are quite happy to be unplugged. In fact, I think they prefer it.
Family hikes and board games are their two favourites, followed closely by playing cards, building stuff, working on the (real) family cars, putting together puzzles. TOGETHER - they really like TOGETHER!
Our 17 year old loves chatting with her friends on-line but she's even happier in her room creative writing or reading. And the only thing our 5 year old loves more than hiking is playing with his toy cars, superheroes and lego. Electronics (tv, games, etc.) excite him at first but he bores of them quickly. IMAGINATION - they really love to use their IMAGINATIONS!
We've got a good stash of stuff for them in our emergency supplies. The added bonus? They're both happy to play by the light of a headlamp or oil lantern.