I'm pretty sure nfc can be passive, the e-ink display doesn't use energy when not changing, and the "touch screen digitizer" could just be a button that is actually a contact (i.e. most of the time the microcontroller is passive).
Also, you could make the card thicker in areas where it doesn't matter (away from the stripe and the PIN
Also, you could make the card thicker in areas where it doesn't matter (away from the stripe and the PIN