Here is a guide for just making cardboard buttons-https://makeymakey.com/blogs/how-to-instructions/makey-your-own-exit-ticket-or-data-tracker and the 3d printed object can be on top in a switch like this. (PLA is not conductive, so putting it on top of the play-doh won’t work. (Unless you did something like bring conductive tape from the object to the top for you to tap. AT that point- you wouldn’t really need the Play-doh anymore!)
@valill sorry for the delayed responses! Last week was crazy for getting back to work and the kids virtual schooling- and all the news!
Collaborate with makers in the community to develop your device idea.