I went to the Hirshhorn Museum in Washington DC a few weeks ago to see the Yayoi Kusama Infinity Mirrors exhibit. Perhaps the most enjoyable part was the end, where you exited through a room with a dense fog of colorful stickers. The panorama shown above makes them look like enlarged skittles.
They gave each visitor three of these circular adhesive gems. I put one on a pair of shoes, the other on a piano, and the final one on a light fixture (not seen in the pictures above).
As for the mirrors, they looked a little something like this: