I am interested to know what other players do with their back yards. Can you tell us what you have put in your back yard and why you chose it?
When I first got my back yard I put a lot of things that I thought I would need like a variety of trees,rocks, jellisacs, etc. After a while I realized that it was much easier and more efficient to get almost everything I needed from the routes. However I noticed that it was very difficult to find crops and herbs. The gardens always seemed to be the least reliable resource on the routes, by far. So I removed all my original stuff and now I have my back yard filled with garden plots. This works really well for me.
(Another consideration is that garden restoration does not require any exotic material.)
What is working for you in your back yard?