Ikea Algot perforated metal shelves, screws
Magnetic boards are great, but Ikea’s version only comes in one size! But you can easily cover any wall by using Algot metal shelves, which come in many sizes. To create my magnetic wall, I measured the area I wanted to cover, looked up the sizes and drew out a plan. Then I just put screws in the corner-most holes to hold them to the wall.
~ Peter Harris