My Less than $4 Faucet Temperature Monitor

This weekend, I was able to finish my temperature monitor. 

Faucet temperature monitor (I still need to tidy up the wiring LOL)

I just bought the following materials:
- Temperature display with thermocouple from Ebay ($1.50)
- Crayon box from Walmart ($1)
- Electrical tape

I used my Dremel tool to fit the crayon box into my faucet. All in all, I just spent less than $4.