Rubber grommets! This set of grommets includes both an open style to relieve tension and protection, and a leg style (no holes) to protect the surfaces your project sits on, prevent slippage, and provide a small flow of air for cooling. (assuming you made this tutorial at the end of your project). Sizing is easy and very helpful. The packaging is just great with the caveat that they don't drill holes or give inside dimensions.
Smartphone Apple iPhone X 256 GB, 1 SIM, space gray
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