I wanted to be able to see how pixel art looks on the Playdate while I work, so I wrote a little Mac app that streams part of your screen to the Playdate. Free or pay-what-you-want on itch for anyone who might find it useful: Rorrim by Dale Price
That's a great idea! What could be more streamlined for prototyping?
I love this! I'm unfortunately not developing on a Mac right now (the gaming PC is more convenient), but if I was I'd totally eat this up. What a lovely icon you've designed there too.