Best tutorial I've seen for wainscoting for your playroom. Use 1/4" MDF. Buy 4'x8' sheets and have Lowe's cut them into strips the width you want. No problems with warped boards and much cheaper than wood. @Jenny Freehardt
DIY Faux Wainscotting...tempting...very tempting...
Colonial Wainscoting Measurements by SnazzyLittleThings.com More
I think this is the wainscoting I will go with in our dining room and possibly entryway. Great DIY walkthrough with pictures. Should be easy and relatively cheap
Faux Wainscoting-This is the one we want
Emily of Decorchick! used a chair rail, wooden frames, caulking, and several coats of white paint to create this wainscoting look-alike. Get the tutorial at Decorchick!.
This is faux wainscoting done in a few hours and at a cost of $35! Could add this to the built-in benches in the kitchen...
DIY: Faux Wainscoting added to my builder's grade home.
A step-by-step DIY tutorial on how to EASILY install wainscoting anywhere in your home! If I can do you, I promise you can too!