While it's guaranteed that plastic wrap will always stick to itself, it doesn't always stick to containers due to differences in electrical charge, oily surfaces, texture, etc. This is a generic clip to help hold the unruly wrap in place when it refuses to obey. The textured bite surface helps the clip hold onto almost any container edge and you can scale it up for a larger container.

Print time is less than 10 minutes at 0.15mm layer height so you won't cry if you accidentally throw one out (although that would still be annoying).