Wow! ... it's a lot of fun
I hope to get a castle soon. Well, unfortunately, It won't be that soon. ('Have lots of things to get, before I can think about buying a castle ...)
Uhm ... Richard gave most of the imaginative possibilities, mate.
(I truly like the dragon one
)
But lets see ... They go into a cave, and find a lost world!
Or ... They go to the local wizard, who tells them to search for a magic ring that makes people invisible, and -- ahm ... hmm
maybe not: someone already used that!
G.