There was a period in the early 2000s when having your entire music library in your pocket felt like a miracle. The iPod did not invent portable music, but it made the experience so frictionless and so pleasurable that it genuinely changed how people related to listening. Nobody predicted that a click wheel and a hard drive would rewire an entire generation’s relationship with an art form. Paul Lagier has built something that carries a similar energy, except the art form is reading, and the device is roughly the size of a large stick of gum.
The Pala One is a fully functional e-reader that fits in a closed fist. Lagier 3D-printed the case, built the firmware around an ESP32 microcontroller, and designed the whole interaction model around a single physical button. The screen is small, the library caps out at six to ten books, and the interface is deliberately minimal. What it trades in screen real estate it returns in portability so complete that the device clips to a keychain and disappears into daily life. Lagier rebuilt it from scratch after the first version went viral in maker communities, and version two firmware adds folder support, list-making, faster load times, and a properly printable case. He has read over a thousand pages on it personally, and credits the Pala One’s size for making that possible.
Designer: Paul Lagier
The case snaps together using one sliding piece on one side and screws on the other, a redesign driven entirely by community feedback after builders reported that the original pin system was unreliable on cheaper printers. M2 threaded inserts are optional but give the finished object a product-grade solidity that the first version lacked. A small loop on the chassis lets you run a lanyard or keychain through it, which sounds like a minor detail until you realise it is actually the whole point. A device that lives on your keys or your bag strap is a device that is genuinely always available, and availability is the entire thesis of the Pala One.
Lagier discovered, embarrassingly late by his own admission, that the ESP32’s 8 MB of onboard flash was being allocated so inefficiently that only 1.5 MB was actually available for books. By repartitioning the storage and adding automatic compression on upload, he pushed usable book storage up to around 5.5 MB. A typical 300 to 400 page book compresses down to roughly 0.5 MB, which means the device comfortably holds a small personal library. A storage indicator in the web interface keeps the math visible. Books load instantly even from deep within the text, bookmarks sync reliably, and a new position-jump feature handled through the web viewer means you are never stranded inside a long chapter with no way to navigate.
Lagier added a dedicated list section to version two, letting you create to-do lists, shopping lists, or anything else in the web interface and check items off directly on the device. Combined with folders for organising your library and bulk bookmark export for pulling your annotations out all at once, the Pala One starts to feel less like a gadget and more like a considered companion object. The single button controls everything, cycling through menus and pages with a logic that becomes muscle memory within minutes. There is something almost meditative about an interface with exactly one input.
The Kindle is a genuinely good product. So is the Kobo. Both are vastly more capable than the Pala One in every measurable specification, and neither of them has gotten me to read more. The Pala One’s entire argument is that the best reading device is the one that is physically present when the impulse to read strikes, and a device the size of an AirPods case wins that argument by default. Lagier has made the files available on his Ko-fi page, with a one-time purchase granting access to all future updates. If you own a 3D printer and have an afternoon free, the most compelling reading device of 2025 costs you almost nothing to build.
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