Here's what you can do with a lot of red buttons, some ribbon and card. Cut out a heart shape, then hot glue on a loop of ribbon, to hang from the tree. (Did I mention I don't like using hot glue?..anyways). Then hot glue on, all your buttons. You can arrange them first on another heart shape, to see what they're gonna look like. Then just transfer them all over to your 'real' heart, one by one. In some of them, I added some red rhinestone hearts, to fill in the gaps.
Cute? These too were for the kids Christmas craft stall.