run electric wires through the bales, we made channels in
the straw with the back of a hammer, then fastened the wires
with large staples made from #7 fencing wire. To fasten the
boxes, we made stakes out of 2x4's, pounded them into the
wall and screwed the box to the end of the stake. We also
used this method to hang kitchen cabinets. The stakes provide
a very sturdy platform.