  It is known that protocols based on weak measurements can be used to steer
quantum systems into pre-designated pure states. Here we show that
weak-measurement-based steering protocols can be harnessed for on-demand
engineering of $\textit{mixed}$ states. In particular, through a continuous
variation of the protocol parameters, one can guide a classical target state to
a discorded one, and further on, towards an entangled target state.
