I saw this technique for making stones in quilting arts magazine and am having fun with it so am sharing it with you. It's a good take along project.
Use Elmer's glue to stick together a layer of peltex or heavy interfacing and batting. Thick or thin, depends on how puffy you want the stone to be and what you have for scraps. (Did I say this is a way to use up some of those little bits of batting you have laying around)
Cut out a rock or stone shape from the peltex/ batting and lay on a batik. Cut around leaving a good half inch all around.
Do a running stitch all the way around and then pull to gather. I then anchor it even more by sewing from side to side as above pic. You probablly don't have to go this far but I like things to stay so that's what I've been doing.
I'm leaving today to go camping so have prepped a bunch and used my ever fabulous wonder clips to keep them together till I'm ready to sew. Now all I have to do is whip out my Baggie and I'm ready to go. Yes it does take awhile but I like to have a hand project going at all times. Not sure yet what I will do with them but there are endless possibilities here.