GBZ Misc Hardware
GPIO PWM Audio for Raspberry Pi Zero
150 Ohm resistor, 270 Ohm resistor, 10nF capacitor, and a 33nF capacitor (another 10nF will work fine as well if that’s easier to find)
If you want to use tactile switches in the rear screwholes like the original GBZ, you'll need something similar to this: http://www.amazon.com/9-5mm-Momentary-Tactile-Button-Switch/dp/B008420WOA or this
A replacement case for the gameboy can be found here.
In case you can not use the audio jack of the original GBZ board here is a replacement.
If you don't have the power switch from the GBZ board or are unable to desolder it you can use this switch.
Micro SD Card
32 Gb micro SD card to install RetroPie on and roms.
Protoytype PCB to create power distribution board or GPIO sound output for the RPi Zero.
Step-Up Modules (Voltage Regulators)
Battery leads/JST Plug
Trying to wire a custom battery up to a PowerBoost? Need JST 2.0 PH type leads. Here
3D Printed Parts
Screen Bracket with X/Y buttons: Thingiverse
Alternate 2-part Screen Bracket with X/Y buttons & drill guide: Thingiverse
Alternate Top screw bracket with HDMI holder: Thingiverse
Drill guide for centered back buttons: Thingiverse
Fake cart to hold a full-size SD card reader: Thingiverse
Holder for a dremel-free battery install: Thingiverse
Button Wells with integrated drill guide: Thingiverse
Cart shell: Thingiverse
Thin ribbon cable: ebay