Supply a DC motor with a SMPS power supply
You can try something like this







simulate this circuit &ndash; Schematic created using CircuitLab

Set the limit resistor high enough to keep the SMPS from current limiting, and the RC for enough delay to let the motor get up some speed. The relatively slow rise of the gate voltage will allow further motor acceleration during turn-on, but make sure the FET is beefy enough to a) do a good job of shorting the limit resistor, and b) soak up the power dissipated during turn-on.