If you have identical ukulele case, how do you know what uke is in what case? You can use stickers, or you can do what I do and use labels.
I got two different snap hooks and a bunch or rings. Using name badge inserts, #5390, I printed the name of each uke, laminated the cards, and then found the right size clip for the particular case. Depending on the handle, I will use the large or the small.
I'll post links soon if the site lets me.
Cards -
https://smile.amazon.com/Avery-Badge...3730230&sr=8-4
Large (3") snap hooks -
https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1
Small (2.5") snap hooks -
https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1
Label - Laminated.jpg
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