LM335Z temperature sensor
1K ohm resistor (brown, black, red)
I had a little trouble finding code for this temperature sensor online, but ended up getting enough pieces together to finally get it working.
If you want a copy of the code, and to see other projects I'm working on, look at my GitHub.
Below are just two images that show the wiring of the temp sensor
Just showing the wiring of it on a breadboard
Notice how nothing is connected to the collector, and look at the placement of the analog pin and resistor.