Some plain T-shirts. This is exactly the kind of purchase that I make sure is Made in America. These are from American Giant. I have their hoodie and it's unbelievable quality, so I figured I'd try their shirts.
In that note... If anyone is looking for arguably the best hoodie made, check these guys out. I love the fit of their hoodies because they're fitted and not all loose and baggy.
https://www.american-giant.com