A few days later I think I have a working prototype. Making a telepathic binder is a little more complicated than just engraving the runewords for "connect" and "mind" and slathering a bit of blood onto it, but I think I have a sequence that will work. Holly and I can test them this weekend. I lie to myself by pretending that the only reason I designed it so that they couldn't be broken or removed was because of the Dursleys. I don't exactly feel like examining my ulterior motives right now.