Astounding: plastic (3D printed) devices that can communicate with wi-fi devices by reflecting signals: https://www.washington.edu/news/2017/12/05/in-first-3-d-printed-objects-connect-to-wifi-without-electronics/
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I travelled recently with six electronic devices, and every single one used USB-C for charging. It was wonderful, and not an experience I've had before.
In praise of Tcl, and reflecting on syntax features for a good command shell: https://yosefk.com/blog/i-cant-believe-im-praising-tcl.html