I try to avoid subscriptions. However, there are a few that we have and currently value at or above their price.
Amazon Prime - now $119.99/year after another price increase? - perhaps we rely too heavily on them, but it is what it is. We rarely shop in-person nowadays, aside from groceries, Target, and kids' shoes. We do use the TV, online storage, free e-books, music, and some other features as well. Also buy some food items from Amazon.
Amazon Music Unlimited - Echo - $3.99/month. Kids love it, and we make ample use of it. A luxury item, perhaps, but 4 bucks, and it's not wasted.
Netflix - $10.99/month - helped us cut the cord.
Xbox Live - $35-45/year. List price is $60, but you can always find cheaper subscription cards. I play plenty, but spend very little on games thanks to patience for sales and the many free games offered through XBL. Also use this to socialize regularly with long-distance friends.
A couple of mistakes that I wasn't pleased with:
DW subscribed to "Starfall" for the kids based upon what was being used in school. Cost us something like $30 for a year, and they used it for a month or so. She then forgot about it, and we were charged for a second year.
DW has subscriptions to some kids' Fire tablet service. The tablets were gifts to us, but the service has a fee after one year. Don't want to pay this, but I don't think I have her convinced.