Quantity   Component name
1 × Rotary phone
1 × ATMega168PA on Crumb168 V2.3 The Crumb168 is a microcontroller module that used to be sold by Chip45. It has now been replaced by boards with other AVRs.
1 × Adafruit Audio FX Mini Sound Board 16MB Flash https://www.adafruit.com/product/2341
1 × Adafruit LiIon/LiPoly Backpack https://www.adafruit.com/product/2124
1 × LiPo Battery 3.7V, 2000mAh, JST-PH Connector https://eckstein-shop.de/LiPo-Akku-Lithium-Ion-Polymer-Batterie-37V-2000mAh-JST-PH-Connector