Abstract: State-of-the-art multi-Petawatt laser facilities coming online include the National Science Foundation (NSF) Zettawatt Equivalent Ultrashort pulse laser System (ZEUS), a user facility at the University of Michigan. The 3-PW pulses will make ZEUS the highest power laser in the USA. This talk will describe the various experimental approaches that can be used to produce ultrashort particle beams and light-sources, as well as their application to study strong-field plasma physics and beyond. One area of interest is to create extremely strong magnetic fields within the hot plasma in the laboratory, so we can study the microphysics likely to be occurring around the most energetic objects in the universe.