"Meems, I need a trailer for my tractor."
Hmm. After thinking about it for a while I came up with this solution. A small wood crate from his little kitchen tied up with twill tape which was left over from something and hanging on the bulletin board. It works out great, b/c he can put all kinds of things into it and pull them all around.
Since then, he has received a beautiful wood tractor with a trailer that swivels and everything, but he loves to play in his two tractor farm. A pile of shredded paper from a gift is the "hay". I also made him some bales of hay out of felt, but we haven't tossed the paper shreds yet. Today might be the day, as it is all over the rug.