First of all, HAPPY BIRTHDAY to st pauli boy! Hope 5 is a great year!
Isa, my lads are enthralled with stories, too--it's the biggest single thing we do here! We have the ongoing saga of the "Stinking Fish Chronicles", wherein our three heroes have many an adventure and wind up with the keys to the city at the end of every story. That's our main series--also, we have Groucho's operettas (he's obsessed with Gilbert & Sullivan, and wants to be the next Gilbert)--these are extremely complex, and involve multiple parts, costume designs, plans for staging.... When I get tired, I get them to tell me stories involving combinations of characters from books they've read--"suppose Aunt Gertrude Hardy were to meet Captain Haddock, and then they bump into King Pellinore and the Questing Beast, and then Curdie and some goblins arrive, shortly before Malvolio enters cross-gartered...what happens next?" They take great glee in this kind of stuff, and they can spin it out for hours!
Don't know what I'd do if I only had one, though...this is one of those situations where siblings pick up some of the parental load, I think!
peace
minnie