Quantity   Component name
2 × Small push buttons
1 × Arduino pro mini These are my favourite at the moment, http://r.ebay.com/c0epvN Don't forget to donate to the Arduino-project.
1 × Yellow+Blue 0.96" SPI Serial 128X64 OLED Display Module Can be found on Ebay http://r.ebay.com/1rDUQ5
1 × DHT22/AM2302 Digital Temperature And Humidity Sensor http://r.ebay.com/drL8DE