On the Tesla board it showed this - a NEMA 3R cabinet modifed to accepted a NEMA outlet, with hole cut for the cord, and can be completely closed when in use. The cabinet is even lockable - which would help prevent the Turbocord from growing legs and walking off during the night
On the car end, have seen someone post using a golf bag rain hood rigged over the charge port on the car, but can't find the pic now.
A DSLR Camera rain hood might work as well - with some velcro tabs added just inside the port. to hold it in place.
https://www.amazon.com/Movo-Raincover-P ... FV6BQBCHW3
Someone also rigged a faucet freeze guard to do the job.
Lowe's Home Improvement stores for $2.98. It's made by Creative Plastic Concepts and is a near perfect fit for the i3's charge port opening,
2015 i3 Rex, Capparis White, Tera World, Technology & Driving Assistant, Parking Assistant, Harman Kardon Audio System, 19 inch 427 wheels, EVoInnovate EVSE