Surprise your mum with a chainsaw, be a bigger star than Tom Cruise, save the world with a plate of veggies, start your new life in a taxi, rescue your family with a tomato, send your dad into a panic with a tractor, do a good deed with a paper bag on your head pack your bags for a trip to the spleen, upset your auntie with ten kilos of chocolate, swap a bomb for three ice-creams on a train . . . and lots more.