How to make cardboard building block?

Hey I can help you in this, as some days ago I have made a cardboard blocks for my son because he had to submit it in his school. So I am giving you some tips on how to make it. First of all take any carton and cut its pointed ends leaving rectangles with one open end. Slide the open end of another milk carton into the inside of the milk carton that has hot glue on it and then allow the glue to get cool. Then create some designs on the blocks and color them to make them more beautiful. Allow the paint to thoroughly dry. Spray the painted cardboard blocks with acrylic sealant spray to make them more durable and water resistant. When it becomes dry then your cardboard blocks are ready. If you want to know more about how to make them then I am telling some websites for you: babytoolkit.blogspot, toysforjunior and ehow.