you should be able to find a trailer hitch online for under $200 shipped, installation in very easy. Most new vehicles have the holes there (threaded too), it just requires you to crawl under the car and attach 6 bolts. then you are done. I did this with my Matrix 3 years ago and it took about 10 min.
once you have a hitch get a rear basket thing recommenced by others (or borrow one from a friend). both of these options will pay for them selves in the first tip.
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