This fancy cold brew dispenser makes me happy all summer. It's really well engineered, so you can tilt the steeper and get the last drop of of goodness out :)
Obviously, you do not need any fancy equipment to make cold brew: Steep coarsely ground coffee in cold water (1:5 ratio) for 12-24 hrs at room temperature and strain. Then store in the fridge and sip delicious iced coffee all hot summer day long, until you jitter yourself into bed and realize that wasn't conducive to a restful night's sleep.
The benefits of cold brew are less acidic coffee, time saved, because you can just fill the concentrate up with (cold or hot) water and/or milk, plus it is easy to adjust the strength of your coffee that way.
My heart and sleep schedule may not thank you, but my caffeine addiction surely does.