@blecky's latest project is an EEPROM/Flash emulator with a fun name:

EEEmu SPI

The EEEmu SPI emulates any Serial Peripheral Interface Bus EEPROM or Flash memory chipsets up to an interface speed of 25MHz. It also supports any supply and interface voltage between 1.8 to 5 Volts and can be configured to support even the largest of memory sizes.

This repository contains configurations for all the currently supported EEPROM and Flash chips for the EEEmu SPI:

EEEmu/Supported-Devices