ok.. this wins long squidmo post of the day.... here goes:
we've played many hours of 'sorry' in a pop up... we also have a rule... no dvds can be brought camping unless the movie is over 20 years old... sometimes i enforce the 50yr movie rule (came up with that one on a hunch, works great).... we do bring along the PS1... it's fun to beat kids at pac man... WELCOME TO MY WORLD, YOUNGSTER.
bikes are great, but don't be surprised how far a child can go on one.. better sneak off a bit before a trip to get your wheels under you..
buy kids a digital camera of their own. getting them to keep a journal or scrapbook is fun as well... tell them to find something to glue in it from every place they stop.. (legal, of course)..
we've always tried to make sure campgrounds were more 'kid-friendly'.. maybe a playground or pool. maybe a lake for fishing... easy access to the beach without any dangerous roads to cross, etc.
be sure to let them help in anything that involves getting dirty, or messy... like helping dig out a stuck jeep... or cleaning fish in the rain... getting them to help hook up in the rain... give them some responsibility other than taking out the garbage.... making kids part of the team is a win-win.
we always include 'indoor' things into our trips, as plan B to a rainy day.. museums, maybe a movie in town, or something out of the weather and out of the camper...
like on the boat, when the fish aren't biting, or it's too rough, or the surf is crummy, it's always cool to go look for shells on the beach, or go snorkling, etc. etc. showing kids how boring camping (or fishing) can be is not the way to impress them with it.
also, if it's too hot during the day, nighttime hikes can be really fun, even for the young-uns... mornings are prime.. don't waste time on breakfast.... kids wanna GO. grab a pack of peanut butter crackers and a jug of water and enjoy the morning.....come in when it's early lunch, eat, nap, etc. when the sun comes out, then hit it again in the afternoon into evening...
i guess the key (at least in our adventures) is to not go too hardcore for them... try to do things that you know they'll find fun, even if they haven't done that particular thing before... keep the pace more at a kids level... pause to look around... let them kind of feel the way, ask them how they are feeling (they might not tell you if they are feeling bad).. give them options on what is going to happen in a day... let them lead the pack.
i guess i could go on... good memories of our oldest who is now in college... and soon-to-be memories with littlesquid who is 5yrs old.... gonna be fun, getting to do it all over again...
by the way, and it probably goes without saying, take lots of photos... i mean A LOT.