Those big (expensive / fragile) double reeds put me off the duduk; a tenor sax reed I can cope with! That's how I got thinking about the xaphoon actually; a nice emerald green maybe, or ruby red... What was that about traffic lights?

Otherwise - how about a Wooden Saxophone? These look very nice actually; always had a yen for a taragato, but never had the spare readies, maybe one of these will do for nice surrogate? Thing is, when it comes to reeds, I'm very much a parallel bore man...

My favourite whistle is a tiny brass G picked up in a Northumbrian antique shop for £2 a few years back; almost too small for my fingers, but the tone is sweet right up into the third octave.