Dinner parties are divine, but hosting them is torture. Those who claim to enjoy it—embracing the esoteric art of menu planning, wine selection, table-scaping, and then suffering over the stove top—are surely the kind of self-flagellating fools who do it professionally (Instagram influencers, aspiring Instagram influencers, Martha Stewart).

For the rest of us, there’s Party by Numbers, a new entertaining start-up that brings everything one needs—and we mean everything—to one’s home, neatly organized in a stylish midcentury bar cart.