Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

My brother got a Nest camera. Inexpensive and sends him a picture of anyone who visits his front door. I recommend this for your situation. After you get it, just leave empty boxes as bait. (Although you probably need to something of value in the box to press charges?)

Another option could be a game camera.

It may be best to get a chained down postal box. Some people even make these themselves. A big box that is chained down with a paddle lock inside that the delivery person uses to place the box in.

I'm thinking of getting both. (Probably making the box myself. What wood would you recommend? Plywood? Oak? Double thick pine?)