Blazkowicz
Legend
these routers can be cute and small these days.
If you know some geeks (nerds are fine as well) you can donate some, they may be flashable (typically with OpenWRT) and thus be used as a general purpose if limited computer. Some have USB, so an unbearably tiny internal flash may be used to boot the kernel while the OS resides on a small USB drive.
You end up with a very low power, always-on internet connected server.