I couldn't find this described anywhere else so figured I'd post here for posterity.
The AirPods Pro case being so slippery was tending to fall out of coat pockets, so I initially bought on eBay a cheap silicon case for it which included a karabiner and keyring clip to attach to a zip. But a case in a case? Apart from looking a bit silly, the top half tended to fall off.
Having carefully watched iFixit's teardown, I realised there was sufficient air space in the lower part of the case to make it possible to thread a loop through, so took a deep breath and made two holes for one. I used a needle just bigger than the keyring loop, which I held in a pair of long-nose pliers and heated in a gas flame. The holes were each made in the direction of the other, and you can feel when they needle's gone through the white plastic and is in the air gap - at which point take it out quick! Getting the loop threaded was a bit fiddly, and I used the pliers to work it through. Although not pretty close-up, I think it's a practical result, and makes me wonder why Apple doesn't do this by default since the case isn't at all waterproof.
Anyway, no guarantees this will work for you, but good luck if you try it.
The AirPods Pro case being so slippery was tending to fall out of coat pockets, so I initially bought on eBay a cheap silicon case for it which included a karabiner and keyring clip to attach to a zip. But a case in a case? Apart from looking a bit silly, the top half tended to fall off.
Having carefully watched iFixit's teardown, I realised there was sufficient air space in the lower part of the case to make it possible to thread a loop through, so took a deep breath and made two holes for one. I used a needle just bigger than the keyring loop, which I held in a pair of long-nose pliers and heated in a gas flame. The holes were each made in the direction of the other, and you can feel when they needle's gone through the white plastic and is in the air gap - at which point take it out quick! Getting the loop threaded was a bit fiddly, and I used the pliers to work it through. Although not pretty close-up, I think it's a practical result, and makes me wonder why Apple doesn't do this by default since the case isn't at all waterproof.
Anyway, no guarantees this will work for you, but good luck if you try it.
