How far can you take the idea of a guitar, and still end up with something recognisable as a guitar?
Quite a long way, as a browse through the Wikimedia Commons ‘guitars by type’ category shows.
But you need to know the rules. And you might want to practice making a traditional model first.
An ‘improvisational’ workplace is appealing, but there are always some rules.
And you might want to start by getting people used to playing a score.