Scalar fields, though simple conceptually and mathematically, can be responsible for a wide array of emergent phenomena, such as spontaneous symmetry breaking, superconductivity, and the production of solitons. These fields may be responsible for the creation of, or even the identity of, dark matter. This manuscript details the production of dark matter from scalar fields in the form of Q-balls, boson stars, and primordial black holes, and explores the consequences of the existence of such objects and their interactions.