You can change just the rubber-blade insert of the Toyota windshield wiper to save money and reduce waste. Push hard to un-stuck the old blade (1:01). I do this for my family's Prius, Corolla, and Yaris 2014-2015 cars. It's similar for many other Toyota models.
To remove the wiper, pry up the little rectangular tab and then pull the whole wiper down, out of the metal "U" in which it is mounted. Reinstallation is the reverse of removal.
To change just the rubber blade, push the old rubber blade out -- it might take some force to get it past the little metal tab that fits in the rubber notch on the end (1:01).
Take the two metal edges and insert them into the thin grooves on the new rubber blade. Thread the new blade onto the blade holder and reinstall the wiper.
To change the rear wiper, there's an additional step at the beginning: Pull up the plastic cover at the base of the wiper (where it connects to the motor). This exposes the hinge that allows you to pull the wiper away from the rear window glass.
Shop around to get a better price. I paid $12 at my local Toyota dealer but only $7 at Toyota dealer in another city (Roseville Toyota). I had to pay shipping but it was still a lot less.