 Spin-wave-based computing has great promise, offering advantage of low power consumption, aided by the absence of currents and therefore dual heating. However, the absence of a method of directly storing the information contained in the spin waves represents a significant hurdle. Here, Baumgartel and Grundler demonstrate the reversal of a nanomagnet via spin waves with small spin-wave power requirements. This article was authored by Korbinian Baumgartel and Dirk Grundler.