Shorts and sandals normally, and a tea-shirt if I have to such as in the local shop/post office, where there is a mad rule that the food hygiene lot think having a bare chest is a food health issue
There are times I have to be fully dressed - Shirt, jeans, socks and shoes. That's at home or in public locally. I'm naked when home alone and on holiday. when having to cover on holiday I wear a flimsy wrap - a very short skirt in light/see through material easily lifted by the slightest wind, nothing else. I've had fun when ladies have realised they can see everything .
It really depends on where I'm going. In the summer time I spend a lot of time in southern Florida and anyone who lives or have gone to Florida in the summer knows it's unforgivablely hot and humid. I have few pairs of loose running shorts I purchased years ago. They are not too long and end just 3 inches above the knee. I bought them one size too big so they can fit loosely and I cut the lining out. The shorts fit loosely and provide a lot of room. I also have a few string tank top I purchased on vacation in Jamaica. They are cut in a way that the upper back is exposed and the front just covers part of your chest. The nipples and the sides of your chest aren't covered. On a hot humid day the shorts and the tank top are my go to. They are light, airy, and keep me cool.
For things like going out to get the mail, taking trash out or walking the dog I'll put on one of my oversized t-shirts on which covers my body down my knees.
That aside if I'm going to work, mall, dinner or any formal places I'll dress appropriately.
I have few pairs of loose running shorts I purchased years ago. They are not too long and end just 3 inches above the knee.
For me, ending 3 inches above the knee is WAAAYYY too long. I prefer mine to end 5 or so inches below my crotch, so I have more of my upper thighs exposed to the sun and wind. I have made cut off shorts out of old blue jeans by turning them inside out and cutting just below the tip of the front pockets. I don't really like them to be any longer than that. The less cloth there is the better, in my opinion.
This depends what I am doing as it is from a pair of shorts only preferably on the shorter side, then with a pair of sandals as well when walking the dog along roads and past properties (across fields the shorts come off so only the pair of sandals on) then a tee-shirt if going in shops etc as some mad people think it is unhygienic to be bare chested. Shoes and socks and long trousers and shirt if there isn't an option for less, and underwear at the last resort mainly if I have to have my suit on with the trousers a bit tight to be commando. Shorts/trousers are one size bigger than needed to be more comfy and less chance people will know I am commando as well.
It baffles me how Americans have somehow decided that "shorts" should be baggy high water pants. It's ridiculous. I wear shorts, real shorts like real men used to wear in the 50's. I also wear a Speedo when I absolutely must wear a swim suit, and of course I get smirks and insults from other "Americans". Anyone from just about any other country assumes I'm one of them. Sad.
Like others have said, it depends, but the minimum required. If just out around the house when I expect a delivery or possible visitor its just a pair of boxers. If going to town or movie then light shirt and shorts. I keep sandles in the car if needed, but generally barefoot. Now if its cold ill look like an Eskimo!
home made or modified mesh gym shorts, was the most common 70's style sportswear. Except mine are mesh so the air can pass through, and the light some, so if I want full protection from shadow visibility of "forbidden" parts, i have to wear a snug brief underneath. But when feeling risky and not too much risk of conservative company I have one that is split to the waistband on sides and shorter than the others, was wearing it for awhile today while loading the truck near the incoming county road. But anything is too much when I work alone out of sight of the road.
I have taken those mesh knee shorts that all the stores seem to have the last few years, they come in double layer construction since single layer is too thin and revealing for most people. I cut the liner out, and then cut the legs off short and make a V cut up both sides, then hem the edge. (Probably could get by without hemming it if ya don't have a sewing machine.) One had a heavy enough liner to make another pair out of, Put elastic band into the waist and did the same with it's legs. Turn those stupid long shorts into old style short gym shorts. The V side cut makes them looser fitting and less restricting to movement.