If you are at all able to crochet, you can easily make tote bags out of plastic bags of any size. I've made quite a few of these...
http://www.myrecycledbags.com/2007/09/15/large-plastic-market-bag/ ...and they last literally forever. I have some that are over 5 years old and still going strong.
I've also made mats for my trailer using simple double crochet. Truly the definition of trailer trash
