OK, this is what I wrote for my son for his 8th Birthday. It’s entirely based on his own particular (and slightly esoteric) interests, so there may be no other children in the world who would enjoy it, but in case there are, here it is – have fun!
PS it’s over 8000 words, and comes out as a 26-page pdf, so you might want to think twice about printing it – I’d read it on screen if I were you!
reverendally.org 
riveting! I am so lucky to recognise some of the things! Grandma
Daniel really liked it – it had all his favourite things in it! Now he wants a sequel….