Not the cheapest at $40, but I'm a big fan of this: https://www.toddycafe.com/product/toddy-cold-brew-system
It's simple, effective, and easy to clean. I just grind my beans at the store with their burr grinder, set to coarse. Leave it soak for 24h on the counter, drain into the carafe, and put the carafe in the fridge to get used during the week.
Bonus: if you break the carafe, it still fits into a standard wide-mouth mason jar.