Cake fanatics, How would you best make a roof for a cottage/house cake?

[DarrellRivers]

I am going to make a Hello Kitty house cake
Am a fan however of Buttercream icing so prefer that with 'extras' rather than royal icing.
How am I going to make the roof, short of sticking on the playmobile barn roof?
Was thinking of perhaps flakes or cadburys fingers in milk chocolate/white chocolate?
Or pink wafer biscuits, not sure if supermarket sells thin wafers.
What have you used, or what do you reckon would work well?
Thanks

Fingers are traditional I would say. I would be thinking you didn't know any better if I saw a flake roof

chocolate buttons look nice when laid out overlapping like little round tiles.

I like the chocolate buttons, in fact I think you can get larger sized buttons
That would look lovely

In one of my cake books they use Rich Tea Fingers cut in half and layered to give a tile effect (you score a line across back of biscuit with a sharp knife to get a clean break).

Thankyou, I used the giant buttons and they looked fab (and were v tasty)