Adapter Plugs International Slide-on Set of 3 New

Description

This set of 3 plugs are made to slide or clip onto a cord.  I have no idea what they are for, but they are still sealed in the original packages.  There is no brand name or other identifying information.  (Sorry the photos are not more clear but I did not want to rip open the plastic packages.)
One plug appears to be for Europe but I can't identify the other two.