I have also been on the lookout for reusable shopping bag patterns and projects online. I'm hoping to sew up some bags using old t-shirts and clothing but nothing has struck my fancy quite yet. Many tutorials simply have you cut off the sleeves, sew up the bottom, and maybe modify the neck a bit to accommodate larger items, but I guess I'd like something more...streamlined(?) than that. I did end up making this market bag, which I highly recommend as a quick project.
And in true Martha style, I spent a few hours of my weekend making chicken stock. One tip I learned from this book: your stock should be at a very low simmer--anything stronger will emulsify the fat into the stock which you don't want.