Choose a frame for your planning board so that it matches the design in the rest of the room where you decide to place it. At home, the best location for the planning board is in the kitchen or hallway, where you will see it several times a day. A picture frame with real glass, preferably with anti reflection coating, is what works the best. It is however possible to use a wet wipe marker, chalk marker or posca, on acrylic (plexiglas) front covers as well.
Frames in black, white and gold
Here you can have a look at what it looks like having the same planning board mounted in different colored picture frames.