Instructables
video Blink Me Kit: Dual LED Flasher
The Blink Me is a super simple circuit from using the magic of capacitors and transistors to create a dual led flasher that can be used in anything that requires some sort of flickering light.  It’s a super easy Learn to Solder kit as well!

You can find it here: https://www.tindie.com/stores/tymkrs/

And more information here: http://www.tymkrs.com/kits/tymkrs-blink-me/