When you let the smoke out of your very last Arduino Nano.

I give you Frankenduino. It's an Arduino ProMini soldered onto a piece of protoboard and wired up to the Nano pinout.

I have 10 Nanos on order but I really needed to keep the project moving.

This ProMini has an ATMEGAS168 chip on it but that's good enough for what I'm doing.