How would you make a set of Halloween scary blinking eyes?

Hi, first and foremost I would like to to say Thank you! And that I'm new to your site after reading your article online about "Mummified Skeleton". I did a Google search "How to", your tutorial was the first article to come up. I enjoyed how easy of a read and understanding the direction are. It was almost like you were in person instructing me how to do it. You and I do a lot of decorations DIY instead of buying them. Majority of the time I use what is around my place inside and outside of. For instance I hade solar garden stakes that had red shooting lights in the stick part from the solar panel to the top then a light in side the bird. I took the bird off then took a skull (cheap one from FD) cut a small hole in the bottom skull, then glue (I used a hot glue gun) the tip of the steam inside the skull in the position you want the skull. The skull didn't light up until after the red light shot up the steam into the skull. It looked awesome. I did two of them then put them in the entrance way to the graveyard. In the graveyard I took cut down tree limbs from the previous season's (ours and neighbors) then make my own spooky tree's. I upscale my witches by adding to them to try and make them less dollar store buys. But now I have been trying to make individual eye's that blink at different times then the other eye's blink. Sure I can use a string of lights that blink but then each individual eye will blink and that's not what I want. I want each set eye's to blink. Any suggestions? I am wanting to put them around the display so it will give the appearance that trick or treaters are being watched. Any ideas? Please I need help.