Here’s a video that shows you what to do:
Note that it’s not a generic part. If you want it to fit and look right, you need the actual part. If rockauto.com has it, great, because that’s almost guaranteed to be the cheapest route. Otherwise you might have to get it from a Toyota dealership.
Personally I wouldn’t bother going the junkyard route suggested in the video. I like to do jobs once when possible, and getting one from a junk yard just means it’ll be that much sooner that I’ll have to do it again. But it’s a viable option if you’re OK with the replacement part not lasting as long as a new one probably would.