Tinkercad Basic Projects Using Arduino UNO: 40 Foundational Experiments for Makers is an open-source collection of hands-on projects built and simulated by Md Akhinoor Islam.

In addition, the selection of components is somewhat limited (including only supporting the Arduino UNO, as far as we could tell). So for educational purposes, it is great.

arduino microcontroller snake 74hc595 tinkercad arduino-uno-r3 Updated on Nov 30, 2021 C++ ...

The Arduino Uno R4, with its enhanced features and capabilities, opens up a realm of new possibilities for hobbyists, educators, and innovators.