You can limit current by PWM, but it will add a little complexity. I think you just want to turn them on and off and not worry about protecting the motors. Use a 3V power supply (although 2V will probably work, so will 3.3V) and don't worry. If you want to adjust the vibration intensity for your experiment, use an adjustable power supply to adjust all motors at the same time. If you want to adjust each individual motor then PWMing or putting a sesistor in series is necessary.
The power supply requirements depend on how you are using the motors.
If only one motor will be on at one time then you only need 430mA. Find a supply with at least 500mA. It might be possible to use the Arduino power supply, but it is close to the limit.
If multiple motors will be on, but only one motor will start at a time, then the needed current is 4 * 130mA + 1 * 430mA = 950mA (for 5 motors). Find a power supply with 1A or more.
If multiple motors can start at the same time you will need 5 * 430mA = 2.15 A.
Best regards,
Steve