The heat wave here has lasted for weeks and it is difficult to live here. The good thing is that we are currently not having smoke in the air.
Crystal Light makes several drink mixes that I love. This one, Raspberry Green Tea, is today's favorite. The small packets are easy to use, and it is low calorie (5 calories).
I use an Aladdin plastic mason jar. It is insulated for cold drinks, keeps drinks cold a bit longer, it has a nice handle, and the best thing is that it does not sweat.
This is not an ad, just my personal recommendation. I also love AC!