I've got something, I was originally going to write something bad but decided against it and changed my mindas some FM's might not like it. But anyway here's my suggestions;
Throw in a couple of recently released Psychopaths and give them the worst, impossible tasks and when they fail put them in jail for 2 days with nothing but 1 Egg to eat between them.
Then put in somebody like James May and see how long it takes until one of the other HM's put a pillow over his face while he's sleeping.
And then... put Gavin in there!
Erm... no I can't think of anything else.