The parts that I have used are:
1. Raspberry Pi 1, Model B, Revision 2
2. wifi dongle
3. USB webcam
4. USB micro cable
5. L293D chip for controlling the motors
6. 6 ΑΑ rechargeable batteries for powering up raspberry pi
7. 3A Switch Mode UBEC 5V to power up the raspberry pi
8. 9V battery to power the motors
9. A plastic base frame from an old toy