Most flintknappers keep superglue in their toolkits -- to "heal" minor cuts so they can keep working. And I've even seen folks glue broken preforms back together -- and then proceed to knap thru the fractures as if the stone were not at all interrupted...
Also good for gluing teeth back into your dentures, and if a nail cracks below the quick, the glue will keep it together until it grows out enough to be clipped without tearing the nail below the quick. Great with some crafts. To remove it from your fingers etc, use acetone nail polish remover...be sure its 100% acetone...sofens the glue so it can be removed..