Just a guy, who, following retirement, wanted to get into semi expensive hobbies that would pay for themselves.
I make 1/87 scale structures, most with some associated history. As such, many of the associated histories are crime scenes, although others are personal to the client.
A few years back i contracted with mobile home community in Florida to design and build 50 scale models of upscale mobile homes for potential clients. Each mobile home was numbered and issued a COA and individually boxed. It was a $40 gift of art to their customers.