My daughter mentioned that she was spending $2-4 per day on iced tea at the sandwich shop next door to her office. I had a coupon for Rubbermaid containers and bought a 1 quart container with a screw on lid with a flip top for about .50. Now she fills the bottle with water before bedtime and puts in 2 tea bags and just sets it in the refrigerator every night. It is ready to go in the morning and she has tea to sip on at her desk all day long for a fraction of what she was paying.
We also make “cold brew” coffee concentrate for iced coffee drinks. I place coffee grounds in a coffee filter and tie it closed with button thread. I use 1/3 cup coffee to 12 ounces of water. Drop the bags in a pitcher with water and let stand for at least 24 hours, then refrigerate. Fill your cup with ice, half full with coffee concentrate and the rest with low fat milk. I get the flavored syrups from Dollar Tree, or flavored creamer when I have a coupon. Fancy iced coffee drinks cost $5 at the coffee shop, these are just as good and you don’t have to wait in line or leave a tip.