So, I stumbled across this pattern on Pinterest, and I loved the concept. I'm not a big fan of crochet bags, mainly because I hate having to line them. This pattern, however, is the perfect solution. The body of the bag is worked flat - it is seriously just a rectangle. You can make is as big or as small as you want, just keep in mind that you need a specific height/width ratio to get the bag to fold up correctly. Then you can line it by sewing a flat rectangle onto your flat crochet piece! Too easy.
Once you've got your lining sewn in, you fold up the bag and seam all of 2 seams. Then you can add whatever strap you want!
I think the striping really makes this bag pop, so I did the same thing, but I also added a simple shell stitch border (skip 2 sts, 6dc, sc into next st) around the whole thing. The strap was just a single row of dc's with the same shell stitch border along both edges.
Pattern: The Masa Bag
Yarn: Caron Simply Soft in Passion, Dark Chocolate, and Autumn Maize (less than 1 skein of each)
Lining: Plain cotton fabric from the quilting dept at Joann's (I bought 2 quilters quarters because the line for the cutting counters was hellacious...)
Folding Instructions Here