Hi littletreefox. I would suggest you read over some of the posts on this trading thread:
http://forum.supercell.net/showthrea...t-12%29/page39
those might give you some ideas of what people might trade.
I would also suggest finding some high level farms to friend or follow, as people quite often sell land expansion materials in their shop after they have completed opening their own land (particularly those that grow and sell a lot of wheat).
Being in a good neighbourhood helps too, where people can swap their excess items with each other, working together to upgrade.