I feel like I am the only one in blogland that has not made these decorative balls. The white one is styrofoam covered in thumb tacks. I was very surprised at how many tacks it took and I still feel like I need more but this will have to do until I can get back to Wallyworld. The mossy ball is covered with pieces of one sheet of moss from The Dollar Tree. I found that straight pins worked better on these. The glue was a disaster!