Snowy is the owl with blinking eyes. Version 1 of Purple Snowy won't blink. Version 2 will have blinking eyes. Version 2 is the final version. It is available on Tindie, http://www.tindie.com/products/nwmaker/snowytwin/
The version 2 of snowy owl uses a dual inverter NL27WZ04 made by OnSemiconductor. Both gates are in use. So it is still ring oscillator, but not the usual hex inverters.
Yesterday I have received the PCB manufactured by OSH Park. It is announced at Twitter. Here is it. Snowy Owl is an amazing bird. PurpleSnowy need more love.
Cute!