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