A grand challenge in microfabrication is the creation of simple and complex 3D microcomponents of varying composition from colloidal building blocks. Jennifer Lewis, Patrick Doyle, and co-workers demonstrate on p. 4734 that colloidal, silicon, and glass microcomponents can be rapidly patterned by stop flow lithography (SFL). This work will enable fundamental studies of granular packing as well as provide a low-cost route to MEMS devices. Cover artwork by R. Shepherd, S. Eisenmann, and J. A. Lewis.