This simple circuit for motors that depends on the MOSFET used was found in the January 1998 Electronics Now magazine. The motor voltage does not need to be the same as the oscillator.
This circuit was found in a 90’s 303 Circuits. The components are from the period and the heating...
Found on Popular Electronics this circuit has variations found throughout this site and section....
The transistors in this circuit from a 1994 technical publication may be BC548 and the 12 V supply...