We give geometric constructions for drawing the images of cubes as seen in a two-slit camera: an apparatus for which, instead of having a single barrier with a pinhole, there are a pair of barriers each with a slit allowing light to pass through. Although a two-slit camera is an example of a “generalized linear camera”, the images of lines are often hyperbolas. Nonetheless, we can use ruler-and-compass constructions to draw the images of cubes in one-, two-, and three-point perspective.