Writing to EEPROM of an Uno

I have an application sketch that reads it's configuration data from EEPROM.

To write the config data to EEPROM, I first upload an "EEPROM Write" sketch which simply writes the data to EEPROM.

I then upload the application sketch.

If I want to change the config data I have upload the EEPROM write sketch with changed data. Then reload the application sketch.

Other than having an EEPROM write option as part of the application sketch, what alternative methods are there to write to EEPROM?

It's possible to do with avrdude.