To complete this project you need white duct tape, cardboard or other backing board, a measuring tape or ruler, a pencil, and scissors. If you like, purchase another color of duct tape to create a border. For more durability, use a piece of plywood or scrap wood instead of the cardboard. If the wood needs to be cut down to size, you will also need a saw to complete the project.
Determine the size of the whiteboard you want to make. Using the measuring tape or ruler, mark the measurements on the cardboard, and cut it to size. If you are using a piece of wood, use a saw to make the cuts.
Starting at the top corner, add a strip of white duct tape. Cut or tear the duct tape when you reach the end of the cardboard. Continue adding strips of duct tape while aligning the edges.
Once the board is covered with the white duct tape, add a border using the colored duct tape.