In this talk, I will describe a few metamaterials design that can be used to drive large amplitude, nonlinear dynamics in condensed matter systems, focusing in particular to the spin and lattice degrees of freedom. For this scope, I will discuss different designs aimed at enhancing either the electric or the magnetic field component of terahertz radiation. The metamaterial structures have been investigated thoroughly using three-dimensional finite element simulations in both the frequency and the time domain. Preliminary results of the observation of the large amplitude dynamics induced by such metamaterials will be shown, detected using timeresolved pump-probe microscopy.