All in All, You're Just Another Brick
National Wall Day is yet another one of those ambiguous days that you can celebrate is many ways.
Got some time on your hands? Take a trip to Wall, SD, and stop in at the famous Wall Drug. If you've never been there before, you'll be surprised at all you don't see.
Got a room that's starting to look a little dingy? Buy a can of paint and cover a wall with it.
When you're done painting, you can sit there and watch the paint dry.
Got some bricks and some mortar just sitting around? Build a wall with them. If you have enough materials, build four walls (aka a room) with them.
Got a copy of the Pink Floyd album? Listen to it over and over and over again. If you've got it on vinyl, so much the better.
When you get tired of that album, try the Dark Side of the Moon along with a little of The Wizard of Oz for fun.