Hello all!

I would like to generate few Christmas Lighting ideas for this year and I need your help! Of course I am planning to decorate the tree. But this year I want my husband to help me put lighting outside the house as well. Running extension cords from the outlets or electrical wiring should not be an issue. What I am wondering is how can I make the lights flash! I already have some static lights for the trees. I am planning to buy for the outdoors. Is there any device or gadget I can buy locally or order online that can make my static lights animating the way I want? I want to have total control over the blinking patterns or flash!

I am a complete newbie in electronics! So, please help me find a solution.

- Sarah