OpenWrt Module MT7688AN Wireless Router Module for 4G LTE Solutions Linux System 128MB RAM/32MB Flash|Home Automation Modules| - AliExpress
List of Linux distributions that run from RAM - Wikipedia
RISC-V or Arm? This tiny 4x4cm Linux board with WiFi offers both options - CNX Software
The Best Linux Distributions for Old Machines
Move over, Pi Pico. Pine64's Ox64 SBC, a tiny RISC-V board capable of running Linux, is now listed on their site, and should be available tomorrow. : r/linux