I've brought the old(ish) farm sets out of storage and built them up for my 3 yr old to play with, as he loves farm equipment. Actually, he does fairly well at putting them together himself, as long as I lay the peices needed for the next few steps out in front of him. However, the last few weeks he has focused on one thing--he wants a Lego tomato harvester. Must be from one of those mighty machine DVD's. I really have little idea of where to start, other than that it'll probably need a conveyor belt in the front. Has anyone else ever tried to make one?