This is one of the ways i made my camper multiple kid friendly. That bunk over the drivers seat, it was full of a big foam pad. I got rid of that pad, put in 2 crib matresses and laid a floor kids play rug inbetween them. Now they have individual sleeping areas and a play area, where they can interact. And when laying down, I set up on the mat, a portable dvd player and let them watch a movie while going to sleep. Since I have 2 girls and 2 boys, this works great, as they can each have thier own side. Their toys are there where you can see them in this picture, and the four cubbys, each one has thier own, unseen, above the toys there.