There's a social media thing called the "What The Fluff Challenge," which is basically a peek-a-boo game with your dog. You hold a sheet or blanket in front of your body, and then let it go as you duck away and hide.
The dog sees the sheet fall, but you're not there. It works best if you're near a doorway. The whole thing was started by a woman in the U.K. Here's her video
I SO need to try this with my dogs!
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