Bespoke

I prefer the term Bespoke to Homebrew. I've see homebrew machines that are superior to commercial offerings. It seems an insult to call those homebrew.

There is nothing wrong with the term homebrew - for beer or pinball machines. It just has connotations like jury-rigged and makeshift; and that does not seem right to me.

Bespoke, on the other hand, implies that something is specially made for a particular person, organisation, or purpose; and to unique specifications.