Each of the yo-yos has a button at its centre, and I'm running short of buttons now. Time to rummage around in some charity shops and see what I can find. Someone's bound to have given away a button tin or jar, or at least a bagful of assorted buttons. Don't you love charity shops? You never know whether you're going to come away empty handed or with a new 'treasure'. Some nifty piece of china, a bargain priced dress, tapestry wool or a book you've wanted for ages. Everyone's got a tale to tell of their best ever find.