Yeah, and costco bulk whole bean stuff is great if you drink a lot of it.
I have a half gallon mason jar (well 2 of them) - Amazon
A mesh basket insert. Amazon, this one works great for me
Grind whatever coffee I have - usually like I said, the big ass bags of costco house blend or whatever. But occasionally just coffee I want to get rid of (current batch is being made with Peru Norte because I didnt care for it).
~120g of corase coffee (use a ~#20+ on my Encore)
Use room temp tap water to pour through grounds/basket into mason jar until water reaches the 'neck' part, or just above.
Stick in fridge for 24hrs
Swish around once or twice during the process
Remove basket and let drain for a minute or two. Top off with tap water back up to neck of jar.
PRO TIP: Dont dispose of 120g+ of coarse grounds down the garbage disposal, you may or may not clog the hose that goes to the washing machine.
I love my pour overs and espresso and french press and whatever, but nothing beats the convininece of a good cold brew when heading out the door in the morning, especially when its still hot/warm.
Depends how you want to do things. You can get two 64 oz mason jars on amazon for $12 (https://www.amazon.com/gp/product/B01N1SIQP2) which is really all you need equipment-wise. If you're planning to do a 2nd fermentation, another $16 can get you 6 16oz swing top bottles suitable for this (https://www.amazon.com/dp/B072Q417JQ). Now just add a cheap plastic funnel and you are all set!