If you're the only one handling these letters and they find a permanent spot on the bulletin board, then maybe you're safe. I bought these for my 3rd birthday son. He loves numbers and letters. I let him look at them and he counted the numbers. We left number 9. I was hoping the letters and numbers were made of thicker paper/cardboard. Something stronger to withstand the game a bit. You'll work one day, decorations, and then I'll let him play with it. Light and good size, but I will not buy again.