any ideas, my son has to make a airplane out of household things?
The key here is that YOUR SON has to make an airplane - not youThis is about being creativeIf you're helping him, he's not exercising his creativityCut him loose in the kitchenThink aluminum foil and aluminum cake pansMaybe steer him towards those items and then let him come up with the rest.
Dried beans, legumes, dried peas, dried fruits, nuts, sunflower seeds, sesame seeds and many types of berriesThese foods are excellent sources of fiber.