Lego traps?

Ok so i've been noticing that the giants don't wear any slippers or war boots and I thought up a good trap to make them feel the pain. LEGOO TRAPPS! We set up tons of legos around the village and when a giants steps on it he totally goes crazy with pain and starts punching in the air and troops around the giant will get damaged too! Please don't hate on my question, opinions don't kill you all. :D

Interesting Idea. Not sure if we have the permission to use the Lego block as it is trademarked.