Well, [shabaz] had a great idea: use it as a star map display. The project combines the Arduino, a round TFT, a GPS receiver, and some external flash memory to store data.

– Color 1.14″ IPS TFT with 240×135 pixels – bright and colorful display with ST7789 chipset that can be viewed at any angle. – Three User Tactile buttons – D0, D1, and D2.

The components required for this project are minimal: an Arduino, a 1.28″ round GC9A01-driven TFT LCD, a handful of jumper wires, and a few buttons.