What Do You Fix On A Hot Night For Dinner!

Ugh I am attempting to plan something that isn't hot for dinner...A green salad and perhaps some sandwiches unless someone has a better idea? I am always looking for something that is tasty, thrifty, and doesn't require heating the house up anymore. I usually do a box of macaroni (or some sort of pasta) with some Italian dressing or seasonings and then a can of diced tomatoes...total is about three bucks and it is a simple tasty treat...which I can send left overs for the hubby's lunch the next day! So ladies give me your beat the heat dinner ideas!