What about glass etching? I've done it on clear glass balls. You can just put a sticker down, then smear the etching cream on, wait the recommended time, wipe off the cream. Then you have an ornament all frosted, with a clear spot of glass where your sticker was. I've done names and the year. It would be cute with a micky icon shape and your names, but it is time consuming, especially if your names are long!