2026 Prius LE - need aftermarket rear seat arm rest / cup holder

welcome!
see if you can find any japanese websites. they usually have better options. amayama may be one, i'm not sure.
all the best with your new prius!

 

I purchased a Lexus Seat Back Storage Cover here is the thread I created regarding it with a picture. It includes a cup holder. Here is a picture of it with a cup in the holder.


I haven't used the cup holder pocket yet but do like the product. About $200 with shipping from http://www.nengun.com.

There are also a couple of cushions in the Japanese accessory catalogue that might work well as an arm rest no built in cup holder though. Here are some pictures.