Bottle Bugs - too cute! just old bottles and I used wire to make wings and antenae. I used pliers to twist the wire tight,and wrapped wire around a screwdriver to make curly features for the bugs. I dug through the tool box to find different pieces that might work for a bug. I glued flat marbles on for eyes on some of them, I had to tape them on til the glue set. I don't know what gauge the wire was.