A keyfob-sized e-reader you can 3D print for about $30
https://boingboing.net/2026/04/15/a-keyfob-sized-e-reader-you-can-3d-print-for-about-30.html
“YouTuber Paul Lagier has built an e-reader barely larger than an adult thumb out of a 3D-printed shell, an ESP32 microcontroller, a small battery, and a Heltec Wireless Paper e-ink display. The whole build runs about $30 in parts, according to Android Authority, or roughly a fifth of the cheapest Kindle.”
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