Xylene is a SPI NOR flash DIP-8/16 adapter with all needed resistors and capacitors. Using it as the wrapper for flash prevents random errors connected to the power supply and ensures proper behavior of the component.
Board was designed using KiCad 5.1.6.
Xylene is available on Creative Commons Attribution Share Alike 4.0 International license (more in license file). You are free to use it, modify it and produce as many of your own boards as you need :)