Anyone build their own plyo boxes?

[no4njnk]

I don't feel like spending $400 for 3 metal plyo boxes when we used to use ones made out of wood in high school and those things never broke with 300 pound lineman jumping on them. Anyone make their own?

[YALE]

Bang:

http://library.crossfit.com/free/pdf/49_06_plyo_boxes.pdf