I personally like to use land mines, automatic m60 sentry guns, laser grids, bear traps an much much more! I also like security cameras to catch all the carnage for you tube! I would put up a sign that says "please break into my home I am not here and I have a sh!t load of expensive stuff I don't like anyways!" I hope that helps
ohhh and don't forget to add a moat with piranha and man eating crocs!