Finally! You can install the latest Arduino IDE and upload code to an Arduino on a Chrome OS device!!! I've documented the entire process. It's hacky, but works well after the install. **
Programming an Arduino from a Chromebook with Crostini – Likely to be Forgotten
Now free! Get the Arduino Create app for Chrome classrooms
KEYESTUDIO Électroaimant Module for Arduino UNO R3 Mega 2560 (Noir et respectueux de l'environnement) : Amazon.fr: Jeux et Jouets
Getting Started with Arduino Web Editor on Various Platforms - Hackster.io
Arduino Create is now available on Chrome OS devices - Open Electronics - Open Electronics
Now free! Get the Arduino Create app for Chrome classrooms
Arduino Create comes to Chrome OS devices! | Arduino Blog
How to install Arduino on Chromebook | Chrome Ready
How to install Arduino IDE on your Chromebook | by Ethan A | Medium