I have made a few myself, mostly one offs. It depends what your time is worth but for the money I think these are an excellent box. http://myownstore.camlockbox.com/Product_l...ID=526&pg=1
I have only used the heavy duty models which are built from 10 gauge steel and they are stout. Just keep in mind if someone wants your camera they will get it anyway. the best security in the world won't help if you put it out in a high traffic area such as a water hole next to a road, I would try to conceal it as well as possible, and sometimes that doesn’t even work. There are several companies now that are making much smaller cams which allow you to hide them a little better than some of the older models.