This is a very helpful add-on you can do with your corkboard.
You´ll just need your corkboard, some wooden clothes pegs and a hot glue gun. For every peg put one drop of hot glue on the back side. Push this peg on the frame of the corkboard and wait for a few seconds until it dries.
Now you hava a very handy add-on where you can hang some important notes, cards or tickets 😉 .