As for spark plugs.....
I've been driving a Toyota Tacoma now since April of 2008 (which by the way I had purchased brand new and driven off the lot and now quickly coming up on 10 years old) and yes the Toyota spark plugs used (at least on Tacoma's) being Denso's or NGK's are recommended to be replaced anywhere from 100K to 120K give or take. That's how good those particular brand of spark plugs are.
Now as for changing the spark plugs, well regardless on the mileage on my Tacoma I change all six of them once every year. Do the same on my wife's 2016 Toyota 4Runner as well as my daughters 2012 Tacoma.
Now back to the original subject on spark plug sockets, someone previously suggested about the Autozone's Duralast brand. Well before I found out about Koken, years back I was using, believe it or not, the Duralast brand that I had purchased from Autozone.
I was highly impressed with it's durable feature and ease of use. It is a thin walled magnetic socket attached to a flex-able extension and boy was it fun to use. Made the job of changing spark plugs simple easy.
Here is a picture of what it looks like now.
https://www.autozone.com/test-scan-...-in-drive-5-8-in-spark-plug-socket/914154_0_0