This app was mentioned in 5 comments, with an average of 3.40 upvotes
A live action version of the game Aux B, which is mainly figuring out how to get components to form circuits using arbitrary inputs: https://play.google.com/store/apps/details?id=com.schnellmann.aux&hl=en
AUX B. Puzzle de ligar fios. Gratuito com doações.