So I think this is one of the most brilliant things I've ever heard of doing. Some of the most precious drawings on earth appear right when your kiddo learns to draw stick figures. So why not have them draw on something useful or something that will be around forever, and then stitch over the drawing?
Simon actually drew this about a year ago, but I decided - even though it is an 'old' craft I wanted to post it to hopefully inspire you to do this very same thing with your precious art memories. Simon drew every member of our family on this canvas bag in pencil and I stitched over the top of it with variegated thread. I used my sewing machine, of course you wouldn't have to do that, but it really made the process more speedy. I love how the eyes and smile connect, just as they do in real life.
If I had it to do all over again I don't know that I would suggest pencil as the medium, but you don't want to use something darker that could show through after the stitching is completed. I used a zig zag stitch and obviously put my stitches pretty close together to cover the pencil. The only problem with pencil was that it wasn't quite as bold, while stitching, as it could have been. It is hard to see when you are up close and personal, is what I'm trying to say.
Treasure every moment, they pass much too quickly. I know I know - everyone says this - but it is far too true to be denied.
Happy Crafting! Happy Memories!