You need
* 3 plastic crates (all the same size)
* string, twine, yarn (anything to hold the unit together to make it rigid
* thick towels, straw mats, etc to cover the tops of two crates
(I hot glued two mats I bought at the $ shop)
Directions::
Stack 2 crates on top of each other.
Place the third one next to the stack.
Tie them together and add a top on two of them to cover the holes.
NOTE:
You can make these stairs as tall as you like.. just add another crate.
