The document discusses various single boards that can be used for creative projects with Firebase including the Raspberry Pi 3 and Intel Galileo. It provides a comparison of the capabilities of each board such as whether they support analog/digital read/write, PWM, servo control, I2C, one wire, stepper motors, serial communication, DAC, and ping. The document also mentions using sensors, LEDs, and the ESP8266 with examples of code. It concludes by providing links to the author's GitHub, Twitter, and Facebook profiles.