I need help from the devious minds of the collective for a prank!

My younger sister is very concerned with fitting in and keeping up with the Jone’s. When she bought a house here in town, I had an evil streak one day. I sent her an e-mail entitled “Can you believe how tacky some people can be?” while she was out of town on vacation. The first photo was a close up of truly tacky Easter decorations. The second photo was from further back and showed a familiar looking door with incredibly tacky decorations. The next photo was from far enough away to show that it was her house that I had so atrociously decorated!

Well, she escalated. When I came back from a trip to Alaska at on July 4th at 2am, I found 2000 tiny American flags planted in my yard. It looked like Arlington Cemetery (I’ll post the photo if I can find it).

I needs ideas that don’t permanently affect or damage her house and don’t cost a lot. I’ve considered the local service that will sneak over at night and put up 100 pink flamingos, but that’s a little too obvious. Can you help me?