Cache Data with an Editor Utility Widget to Access at Runtime?

I want to provide the designers on my team with an editor utility widget that they can use to provide some overrides to our level generation system. It’s fine if this is debug-only code that can’t function in a release version of the game, as this should only function in editor anyway. I’d like to give them an editor utility widget to do this with as it’s very convenient to use, but I’m unsure how I can actually cache the data they enter so it can be accessed by another class at runtime. I’d need to cache an array of object pointers. Does anyone have any ideas? Thanks in advance.