I like all things in balance so that modern and traditional each has their place. What is the THCD equivalent of shorts, a T-shirt, and sneakers?

I am already finding tweed jackets and wool hose, while welcome in winter, are too hot in May, so leave my jacket behind when going out. In and about the house I sometimes push my socks down to the shoe (scrunched?). I confess I have also taken to wearing moccasins about the house with kilts; I think they look very well together; were they to become an American kilt tradition, I wouldn't mind at all. I have relaxed other aspects of the traditional dress code and just choose whichever shirt suits the kilt. I find quite a variety of shirts, though admit that Tattersal-types look good too.

I find I wear a relaxed kilted look about the house or to concerts. To Celtic festivals or restaurants I tend to THCD because I think the effort to preserve these is important.