Glaze-gluing the broken handle back to the teapot. I (more-or-less carefullyish) poured glaze over the top of the teapot; when it all melts, it will get in and around the attachment points, holding everything together. If the handle doesn't fall over and stick to the side. :)

(of course, there's still the lid and the strainer holes to worry about - there's always a chance that the lid will stick, or that the holes will get clogged with glaze or something... :) )