I would like to open the debate on the use of copper for whistles. There seems to be some controversy over this, some believe that it is highly toxic and others do not.
My point is this; untold zilliions of us receive our water supply through copper pipes, most of the worlds top chefs cook in copper pans. If it was that toxic wouldn’t we all have two heads by now?
Controversy? where?
As you said, copper plumbing is enough of a proof, with cooking pans. Or distillation installations from Cognac to whisk(e)ys.
If you’re still afraid of a bitter of copper oxide–verdigris–just apply some kind of household or beeswax to limit oxidation; else super-paranoids may varnish it.
On the other hand, plenty “wholistic” charlatans advise people to wear pure copper jewelry every day, for alledged “magnetic” or other reasons. I’m not really sure it helps them much beside placebo effect, but since this practice has been around, advertised in every popular magazine, I guess one would have been publicly warned of potential danger.
I guess the reverse, or negative, rather, effect of placebo would be called sorcery. If you believe it, it may harm you, booga-boo!
Zubivka! I have put a curse on you:
You . . . Will . . . Buy . . . More . . . Whistles 
Gotta love that curse!
serpent
Maybe one of us could design a new whistle called the ‘Toxic Shockwave Whistle’.
It must have the following specs:
Hmmm, where can we put the lead? Come on guys, help me with this design.
First person to break out wins.
Add a little Chromium-6 and Mercury to the beer!
Make the whistle carrying case out of asbestos fiber!
The lead goes in as part of the paint, of course. On the fipple.
Ummm… at the risk of coming off as “totally gross” and of seriously questionable class/and/or/judgement… wouldn’t it have to come wrapped in paper and have a cotton string attached to the… ummm… cotton cleaning plug???
I’m slinking off into my shadowy corner now…
Gotta love that curse!
serpent
I think that curse comes with the territory 
What’s wrong with copper oxide??? 
Verdigris is our friend!
Know how they get all the blue and/or green stuff in cheeses like stiltons and Danish Blue? Poke copper wires in, let the verdigris develop, then pull the wires out…leaving all that yummy verdigris goodness behind…
Drop the Delrin and substitute it with the lead!
I hate the taste and smell of copper.
If you have copper pipes, the danger would be in the tin/lead solder and not the copper as some lead can leach out into the water.
Usually, there is no danger if you dispose of the water that was resting in the pipes. Just run it for as long as it takes to clear out the water that has been sitting in the copper pipes.
Yucch. Copper cheese supposed-tories.
I’ll stick to French blue cheeses, or gorgonzola. They just use good (old) labour from organic mold (sorta penicilliæ, I reckon) for their, er, marbled effects.
But you must be pulling my leg. Now, what is true–take my word on it!–is the Swiss use holy water bubbles, then coat them with cheese to make their holey cheese.
.I heard that waking up in the mornings is bad for your health , Although not waking up is supposed to be worse 