The TTGO T-Display is an ESP32 development board from Lilygo with an integrated screen that looks fantastic. While this has great support with Arduino and (I assume) ESP-IDF, it took a bit of playing around with a Devicetree overlay file to get the screen working in Zephyr.
It's impossible to buy a Raspberry Pi right now so my company is looking to the Orange Pi as an alternative. One perk is that these boards include eMMC memory so that the OS is stored on the board itself. Here's how to install Linux to the flash memory.