I think you'd want to use the same technique you might use for t-shirt quilts. Search for that. I'd offer assistance, but I've never done it. As for the shiny stuff, you might consider using that for embellishment/surface design. Sew it on top of things.
Good luck. It will be a sweet set of quilts and the memories will be far bigger than the little pieces. I am sure every time the kids look at it, the individual pieces will take them back ;-).