Door Bell:

Ariel and Benny

2 of each of the below.
434 MHz RF Transmitter Module $3.95 https://www.sparkfun.com/products/10534
434 MHz RF Receiver Module $4.95 https://www.sparkfun.com/products/10532



HT – 12E Encoder IC  (each is pack of 3)    https://www.amazon.com/dp/B00B88FNW8
HT – 12E Decoder IC                         https://www.amazon.com/dp/B00B88FMPQ

Sanjay

Pan-Tilt, WITH micro servos  https://www.amazon.com/dp/B00PY3LQ2Y
Light sensors: https://www.amazon.com/dp/B00XDT8KI4

Nathan
Buttons  https://www.amazon.com/dp/B072R1H185
Case for display https://www.amazon.com/dp/B01HV97F64  <-- Did not get yet!


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Zack and Jake
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Parts needed:
-Ceramic capacitors
-Electrolytic capacitor
-9v Battery
-Hookup Wire
-Audio plug
-Resistors
-18 gauge solid wire - http://a.co/cPI0gl8
-Velcro
-NPN transistor - http://a.co/b0zRtnI
-Copper clad board - http://a.co/1a07Jhj
-Battery clip (comes in pack of 5) - http://a.co/hmrRiEp