We got the kids some glasses (had plastic film lenses) last Christmas. One pair made Santas around the lights, one pair snowflakes, and one pair elves. So these do exist.
Those are from a Bokeh lens with heart shapes cut into them. You can find them with lots of different shapes, as well filters for your camera lens that will make all the out of focus light make the shape. City scapes and christmas lights are really great for Bokeh shots.
used one of these at a concert, they got passed around. Best part is it was during a song that had a bunch of hearts on the screen so there were double hearts.
Years ago we went into a Christmas store while on summer vacation (because of course we did) and one of the best dumb purchases were a bunch of paper glasses that were like these that changed lights into snowflakes, the text Merry Christmas, etc
They were cute! We loved pulling these out around Christmas and looking at the tree and neighborhood lights!
Never in my days would I think my astigmatism would become trendy enough people would want to copy me. I'll trade you, I can have your good eyes and you can have my star vision.
I got the same kind of glasses passed to me on a festival with the message share the love. So I wore them so long and showed so many people and when it was time for a new owner that was even more amazed by it then me I passed it on, had them for a couple of hours and miss them still.
My eyes do that without glasses.