I bought the OEM sport brake pedal cover for the Lexus IS. It's a little bit larger than the Corolla pedal, on the sides. I wouldn't recommend it for that reason. But it hasn't slipped off... yet.
I have ordered a set from AliExpress that is for the Corolla. Says no drill and doesn't have those goofy clamps. Hopefully it's a rubber snap on kind of thing. I will definitely post some pics when I get them installed.
Shipping from China so it might be a while.