Wobbly Tower

When Ephram was all done with his survival materials in his tent, he hauled them back into the kitchen.  Instead of putting them away, he decided to make a tall tower out of them.  It was funny to watch him think about which items to stack from bottom to top.  It was hard not to laugh each time the tower collapsed... but then he finally got it!

And what do you do with a tower once it is built?  Wait less than 10 seconds and then knock it down.