Sewing projects

Here are pictures of the denim quilt top:










I'm currently debating what to use for material for the back...muslin, more denim, flannel, a cotton fabric? The main factors are cost and wear: We don't have a lot for me to spend on the material for the backing and I may have some flannel in my stash that would cover it, but would it match and would I have enough to finish the other projects that I have it for? Muslin is cheap enough, but how would it wear? So far my experience with muslin has been favorable, but this is meant to be a picnic blanket that would experience more wear being on the ground. That brings me back to the denim option, but that is expensive and makes for a heavy blanket. I've also thought about making it fold into itself as a bag with handles...hmmm...to find a pattern...or at least a tutorial.
On other projects:
I've started Courage's Halloween costume: He is going to be Pluto the dog. He was thrilled when we went and picked out his yellow fabric on Saturday and wanted to carry it around like a blanket...thankfully I have a few scraps of fleece in my stash (you never know when that scrap will come in handy!) and pulled one out for the boys to play with. I will post pictures when I get it done.
Jarom is going to be Mickey Mouse again this year and if anyone is interested in knowing how I made his costume, let me know.
Since I've had this urge to sew I picked up some cross stitch that has been sitting around waiting for me to finish it and got to work. Significant progress has been made and I finally feel like I'm getting back in the groove of holding a needle and thread again.
There have been other projects that are interesting me, but at this point I think I'd better get started cutting out more diaper covers for when this little one comes and for the ever-growing Courage who is wearing through what he has and not quite potty trained.