Graph paper is commonly used for plotting, well, graphs, plus other spatial and mathematical visualizations. But for Pejac, its potential goes way beyond a two-dimensional gridded surface. The artist, who is known for his trompe-l’œil paintings and playful street art interventions, often turns to the precise geometry of gridded sketchbooks in order to challenge perception and think instead about depth and movement.

From a group of kids tossing snowballs—wait, they’re cubes from the grid itself—to a construction worker carving out a silhouette of the famous Sistine Chapel motif of God and Adam’s hands touching, Pejac challenges our sense of space and the possibilities of the “blank slate.” Find more on Instagram.