We did a contact paper privacy window a couple years ago and the two most asked question were:
"Can this be done with cling film?"
"Can these be cut on a circuit cutter machine?"
Yes to both! You can check out the contact paper project here:
The difference between contact paper and cling film is that contact paper is adhesive-backed and cling film statically clings. Think of them as contact paper = permanent and cling film = temporary. Cling film cutouts are also reusable!
Also, cling film comes in about a kajillion designs and can easily be applied in one piece. You don't need to go through the trouble of cutting out any shapes to do this.
My lovely wife Mariko and I love art and the process of creating it. The goal of these privacy windows wasn't to do them as fast and as easy as possible, but to create something unique together.
Window cling films are also called decorative films and help block heat, cold and UV rays. We looked at local Japanese brands, but found them cheaper on AliExpress. The quality is the same as they both block 99% of harmful UV rays. Hooray!