Khadas SBC VIM3/VIM3 Pro - Available from their store related code
Khadas is an SBC that supports Linux and Android in roughly the same size as a Raspberry Pi 4. The Basic has 2GB RAM and 16GB of eMMC, and the Pro has 4GB of RAM and 32GB of eMMC and costs $139.90 USD.
Khadas boards feel like high quality, and so do their add ons. The new M2X extension is only $8 and snaps onto the M.2 slot of the SBC. With it you can add an NVMe disk and a 4G LTE modem.
Currently this only contains SD card images built using Khadas fenix
Download and flash with Balena Etcher, or similar, to a MicroSD card SMALLER than 128GB. Plug into your Khadas VIM3 and boot.