The Raspberry Pi platform is wonderful for all kinds of DIY projects. The Pimoroni HyperPixel 4.0 Square Touch Display helps you do even more. It has 720×720 pixels resolution, 18-bit color, and 60fps frame rate.
HyperPixel 4.0 is great for Pico-8 games. It has 40-pin female header for Pi B+, 2, 3, 3B+. Costs under $80 at this time.