Here's my ultra basic, super simple TNT (Tried 'N True) Top that I sew over and over in different knit fabrics. I wear them all the time. I did make some effort to get a nice fit, but now it's very easy to cut one out and stitch it up, mostly on the serger.
It's a one-piece, boatneck, elbow length sleeve pattern. The front and the back are the same. Drop a little food on my lunch hour? No problem, just flip it around and go back to work!
BUDDY GUY & JUNIOR WELLS: Drinkin' TNT n Smokin' Dynamite
There are also some folded pants, jeans, t-shirts, elsewhere, but this is basically my wardrobe right now. I try to keep my color palette in mind, so things would go together well.
It's very casual, but that suits my lifestyle. I wear the same things to work as I do on my days off, so I don't need a lot of clothes and I LOVE comfort - a lot of sewing with knits.
I'm more or less sticking to these colors for my clothes, so everything would coordinate better. For pants, I only wear black or jeans. The lighter/brighter colors cheer the outfit up.