I have 2 pairs of wall plugs (as depicted in the first image) that have different profiles. Most of the double pairs of plugs in the house look like the ones in the 2nd image and can fit the standard wall plug covers that are easy to find online. I haven't been able to find anything online that would fit the plugs in the first image.
I bought a double plug wall cover like in the second image and tried a couple of things to modify it to make it work on the mismatched plugs. I tried using both a hacksaw and a heated pyrography knife to cut out half of the cover so it would fit over the left rectangular plug. I did this twice with 2 covers and both times I failed. The plastic of these covers was just too hard and brittle and no matter how gentle I was it cracked at the end and the saw and heated knife could not get through it.
What ideas do you have to get a cover over these plugs?