Couldn't find anything like it, so made it. These fit fairly snuggly if you put them on while the foam pads are still on the original gear. They seem to wiggle a bit on mine, so either scale down very slightly and do as I did and use some hot glue to hold them in place. I put a few rubber pads on the bottom as well to help keep it from sliding. Works great and keeps my phantom from toppling over.
Feel free to modify. I was tired when I made it and just didn't feel it necessary to get a perfect fit.
Print and snap into place. Found it easier to put it on towards the middle then slide it over the rubber pad at the end. If you don't want to use hot glue, zip ties work just as well.