It comes with everything you need, including brightly colored string and pretty pushpins. No hammer or nails are necessary, you simply push the pins into the foam canvases (three 8.5-inch square canvases are included) to create cool designs. There are patterns included to make a heart, peace sign or “hi” message, but you can also let your creativity loose and create anything you can dream up. It’s recommended for ages 10 and up. Enough ingredients are included to make five bath bombs in all —enough to keep some for yourself and share with others too. Bombs away! When finished, the board measures 11 ¾ inches. A hanging cord is included, so you can display it right away and proudly show off what inspires you.