Place some Halloween themed or coloured washi tape on one side of your wooden pegs. Then using stickers, glue them to the top of the pegs.
I have used some free graphics, and my apologies to the originator as I downloaded them a few years ago, and I cannot remember where from. I just printed them on cardstock, punched them out and then glued them to the top of the pegs.
These can now be used to close off treat bags, place a magnet on the back and place on the fridge to hold your children's Halloween projects. Easy and many uses.