This is a UK plug adapter to fit over existing ones. A few of my plugs have plastic ground pins because by law they have to for safety however I have dropped some of them and broke them off rendering them useless. I have tried to glue them on but they do not have enough surface area to have the glue hold so it breaks off again. This is to fix it.

Print this horizontally to the pin is horizontal this will give better strength in the pin and won't snap off as easy. Print in ABS as well
The holes will slide over the other useful pins glue it down and voila it works now and you can use it!