I have a lot of yellow jackets and some bees on my property… and they love enclosed spaces.  I am plugging and unplugging my trailer quite often, and 1+1=2 most of the time.  Unfortunately I discovered I'm alergic to bees… apparently not wasps, though.  Either way, they both hurt.

So, I made this little cover to make sure I didn't get any unwelcome guests in my 120VAC power receptical.  It worked for this past summer… so far so good.

Obviously you're going to want to make this out of flex or TPU not only for the UV resistance but because it just wouldn't work otherwise.  Go easy on the infill to give it some flexibility to mold around the cable.

Message me for the Fusion 360 files and I will send.