From Ken Olsen of Maker’s Box on Tindie:

Soldering Kit for Doctor Who Fans
Show off your Doctor Who cred with a DIY badge you can solder yourself. Powered by an Attiny85, lights and sounds like an 8-bit TARDIS. CR2032 Battery not included.

Kit Contains:
- 1 ea., Perfect Purple PCB from OSH Park,
- 1 ea., Pre-programmed Attiny85, Atmel ATTINY85V-10PU
- 1 ea., SPDT Switch C&K JS202011AQN
- 1 ea., White diffuse 5mm LED, Lumex SSL-LX5093UWW
- 1 ea., 100 ohm 1/6W 5% Resistor, Yageo CFR-12JB-52-100R
- 1 ea., Piezo speaker, TDK PS1240P02CT3
- 1 ea., CAP CER 0.1UF Vishay BC1160CT-ND
- 1 ea., SMD Battery holder, Linx BAT-HLD-001