Heltec-Aaron-Lee OLED ESP8266 Keystone Project Box

I have an ESP8266 with OLED display from Heltec-Aaron-Lee called the WifiKit_8. I know that people are saying the ESP8266 is 5v tolerant even though it is a 3v3 part, but I would rather not risk it. So I needed to build a little voltage conversion circuit using a PN2N2222 transistor and three resistors (one is just to pull up my sensor device output to 5v). I wanted to house this in something to protect the GPIO HVLV circuitry and I decided a great way to make this work was to build a little box