  Collections of persistently moving active particles are an example of a
nonequilibrium heat bath. One way to study the nature of nonequilibrium
fluctuations in such systems is to follow the dynamics of an embedded probe
particle. With this aim, we study the dynamics of an anisotropic inclusion
embedded in a bath of active particles. By studying various statistical
correlation functions of the dynamics, we show that the emergent motility of
this inclusion depends on its shape as well as the properties of the active
bath. We demonstrate that both the decorrelation time of the net force on the
inclusion and the dwell time of bath particles in a geometrical trap on the
inclusion have a non-monotonic dependence on its shape. We also find that the
motility of the inclusion is optimal when the volume fraction of the active
bath is close to the value for the onset of motility induced phase separation.
