Ok, here’s what I did. I bought this bar for hanging things - it’s 48" long.
I make the little hook things. I hang the whistles by the bottom hole.
The pics show the few (low A and below) I have hung so far. Has anyone tried something like this before? Think it’s a good idea?
Neat. I think I need one.
I think I would cover the bottom half of the hook with a protective sleeve of somekind, perhaps rubber, or maybe even wind some black electical tape around it a few times; to provide some cushioning…you wouldn’t want the hook to scratch up your toneholes.
tool-dip would probably work great for protectiong from metal-on-metal scratches. I wonder if it’d be safe to do wood this way, though. Neat idea!
Great for all of the “closet whistlers” too! 
Yes, and it’s not just a matter of possible scratching: Hanging whistles like that will eventually lead to notches forming in the tone hole where the hanger makes contact with the hole edge. Also, wooden whistles should NEVER be hung or stored like this, regardless of whether or not the hanger it self is cusioned in some way.
Loren
Now you’ve got me wondering what a tool-dipped whistle would sound like.
Yuk.
Loren
Hmm..I have a bunch of cheapie whistles I never play…maybe an experiment is in order 
Nice topic, but I am surprised the title has not attracted Mr. Amar as of yet!!! 
Not for whistles but I use these for my flutes when I’ve got more than one out.
The fun part about this rack is that all that interesting condensation would come dripping back towards its source… blechh! Something in me wants to drain my whistles towards the bottom end.
Jennie
Is that what I’ve been seeing in the rear windows of all those old pickup trucks? Wouldn’a guessed those guys were all flute-players!
Is that what I’ve been seeing in the rear windows of all those old pickup trucks? Wouldn’a guessed those guys were all flute-players! [/quote]
Back of trucks?
Naw… them boys are just what ch’yall might call “Suthin’-Ninjas”
Here’s the final implementation. I keep a few Overton, Copeland, and Reyburn whistles in their bags on the shelf above the rack.
Works out pretty well so far.
There they are, Daniel’s legendary Reyburns. What the heck is that big black whistle with the gold tuning slide?
Nice! The whistles line up so neatly. Did you measure the hooks?
Great idea.
Hopefully, none have fallen from the hooks. I suggest making the “J” part a bit longer.
有时，简单的更好。
That’s only the Low D and a Low Just Intoned F Reyburn on the rack. There’s three more Reyburns (the high Keys) in the cloth sacks on the shelf.
The “Killer F” is the prototype for a Chrome Molybdenum/Brass Tunable Low D model Bill at Serpent Music made on special order. http://chiffboard.mati.ca/viewtopic.php?t=31011
No measuring. I made the top hook, then slid the whistle up and eyeballed where the bottom hook should be.
I’m not sure if you mean the top or bottom hook, but it will take a significant earthquake to shake them off the wall in either case. If that happens I’ll be grabbing my Reyburn C/D set and Overton Black Anodized Tunable High D and shielding them with my body. Haha!
I agree, simple is often better.