Nice project! Our house has something similar. Every room has its own rotary phone, with its own number (usually someone's birthday!). I think we have 7 or 8 to

Nice project! Our house has something similar. Every room has its own rotary phone, with its own number (usually someone's birthday!). I think we have 7 or 8 total. They can't dial out or anything fancy like that, but they can all call each other. The kids mostly use it to call and ask us to bring snacks when they're playing, and we mostly use it to call them and ask them to come to dinner!