Quantity   Component name
1 × ATTINY85 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
1 × Large 20mm LED A Large led that is available at RadioShack.
1 × CR 2032 Batteries and Battery Accessories / Batteries.
1 × CR 2032 Clip A battery holder for the CR 2032.
1 × TMP 36 Temperature sensor.
1 × DIP 8 Socket Meant for easy exchange of the microcontroller.
1 × Small Perf Board Solderable Breadboard.
1 × 220 Ω Resistor As Ohm's dying uncle said to him: "With great power comes great current squared times resistance."