How to make snap board or perforation?

Hi all,
Been using Fritzing for a while but finally joined the forum. I’m thinking of making a business card sized pcb esp8266 series. I’d like to make some of the modules or parts snaps. I can’t come up with a way to make them perforated. Ideally I can have wires go to VIAs to connect the boards but then perforate them or “snap” them to make them shields.

Any ideas or thoughts? I found a few forum posts from a long long time ago but with no real answers :(.
Maybe something like this?