My darling little angel, Topher, chewed up TWO pairs of prescription glasses (mine, of course). I had just replaced them after the first chewing when he got a hold of them again and cracked the lens and ate the ear part! Needless to say I put them well out of the way now.
He chewed the plugs off 1, the toaster; 2, my daughters brand new professional hair straightener, voiding the warranty; 3, the livingroom lamp;
4,another livingroom lamp; 5, something else, we're not sure yet, but we found him with the plug and we're not sure yet what it's from!

Thank heavens these things aren't plugged in when he chews them!
I have to say, though, that since we've gotten our second yorkie, Sophie, he's too busy with her to chew anything so he hasn't done any damage since she's come to live with us! She's been a blessing in more ways than we can say!