Found these at Home Depot. Looks just like the LED spotlights that they were selling at Spirit Halloween for $24. Picked some of these up at Spirit and they are supper bright. However there is a delay when you plug them in so that would have to be factored into the sequences.
They also had the following LED spike light. Not sure how bright these are and if there would be a similar delay or not. Very tempting looking at the metal construction and the $7.88 price tag
Christmas Lights on Channel Dr 
120 LED lumens is equivalent to a 30-35 watt incandescent spot light bulb. 350 lumens = 40 – 50watt, 800 lumens = 60watt. The ones from Spirit Halloween have a strobe switch plus they mark them up knowing that people are going to use those 20% off coupons 🙂