The blink pattern is an actual firefly song of a type of Japanese firefly. It is a scaled down version of the Jar of Fireflies code that my partner wrote. I have included the code here.
Step 1: What you need
copper tape (from a glass supply store)
a glass cutter (from a glass supply store)
pliers (glass pliers are best but you can substitute regular pliers and coat the tips with rubber like the ones below)
tiny wires, preferably two different colors
ATTiny45 chip (code attached*) (Digikey #ATTiny45v-10SU-ND)
LED (Digikey #160-1423-1-ND)
CR2016-1F2 battery (Digikey #P222-ND) (Really, any 3v battery will do. This one was chosen for form factor.
*Getting the code on the chip could be its own Instructable. When I am a microcontroller guru someday I will post on how to do that.