  The study of novel 2D platforms implementing magnetism in tunable van der
Waals (vdW) homo- and hetero-structures paves the way to innovative spintronics
and magnetic devices. In this study, we unravel the intriguing properties of
few-layer Nb$_3$I$_8$ vdW nanofilms from first principles, showing how and to
what extent specific magnetic orderings can be tuned using several degrees of
freedom, such as film thickness, stacking geometry, and strain or even a
combination of them. All these aspects are explored here, giving a
comprehensive view of this novel and promising magnetic material.
