I had nothing in particular in mind, though...

[ He sets out patch from his medical kit. It's a piece of metal, some kind of titanium alloy, designed to be slapped over a wound as a sort of bandage-slash-replacement plating and make sure outside bits stay in. It's about the size of a serving platter. ]

Try this. Do what you wish with it. Titanium alloyed chromium, vanadium, silicon and molybdenum.