Sometimes plain and simple is the best.
I’ve made quite a few of these smaller boxes in the past couple of months. Mostly they’re in a clear textured glass with little or no embellishment. They are made with the invitation on the top and either a party invite /photo or textured acid-free paper on the inside of the lid. There’s no additional border; the edges of the box are in line with the edge of the invitation. If this is what you’re looking for, you can find them here.