Glad you asked...
All you need for this some thin plywood and screws and some latches for the top. These are great for halloween. You can also make a thick one that you can get into. Step by step instructions for a mummy coffin. http://wayneofthewoods.com/coffin%202.ht...
Then again, this answer might help you...
In order for you to make a mummy coffin, you will need to have some kind of cardboard or construction paper, as well as paint, pencils, etc. For more information look here: www.unmuseum.org/tgmp2.htm...;

