I like all the ideas but I think the construction box is what I'll try.
I have an alarm and video system but they weren't completed. They are now, though. I have cameras on cameras so no camera can be cut without being seen. I have an audio warning on an outdoor motion detector that basically says at very high volume, welcome to invited guests, everyone else leave. It warns that neighbors and residents have been alerted and that video has been taken.
On alarm, the audio alternates with sirens and says at high volume, Burgary in progress, everyone come quick.
We live in a rural subdivision of 1/2 to 10 acres lots. Ours is just under 3 acres. Neighbors close enough to hear but not really close enough to always be counted on to see what's going on.
The great news is that they caught the guys who did it but I don't think I'll get the ammunition back. I'll have to start hanging out in line at Walmart, I guess. Not really, though. I need it but not enough to stand in line for it. I'll get built back up.