Ask HN: How would you build a buzz-wire game, without electronics?
I'm thinking of this primarily as a Gedankenexperiment, but also as a practical idea for a game that could live outside in the (English) rain!
Eg. 5V DC powered buzzer + 3 AA's. Or buzzer that works with 3..4V with a single Li-ion.
Use eg. stainless steel wire, even if not outside in the rain. Stays better-looking if device is stored in a damp environment like a shed. And of course battery & buzzer mounted such that no water can leak in.
Bonus: for deaf users, you could include a red LED (+series resistor) wired in parallel with the buzzer.
P.S.: this is really too simple to warrant a HN post.