This is just a reinforced version of the elegant power bank holder of agibson2 (@agibson2_177973) to power your Quest 3. I optimized the original because a friend repeatedly had the problem that the plastic clip at the top broke off and the plastic clips on the headband also broke over time.
For the PD charging the INUI BI-B61 is used and attached to the cloth strap which comes with the Quest 3.
It's possible to use this holder with a belt. Maybe you can use it with the original cloth strap of a Quest 2, but I am not sure.
INUI BI-B61:
https://www.amazon.com/dp/B09176JCKZ (original link provided by @agibson2_177973)
PRINTING:
Orientation: Upright
Supports: Tree supports, otherwise the support is more difficult to remove
Layer height: 0.2 mm
Bed adhesion: I recommend printing it with a brim, because the contect surface is small
Material: I use PETG, because it's less brittle than PLA, which might work too.
The author remixed this model.
Some changes because of multiple breaking incidents: