Hollow SD Holder: 4-way Insert

I love rikitheshadow's remix of a micro SD card holder that hollows out the bottom for storage or in their case for homemade balm storage for their girlfriend. I printed one and loved it.

But I came across a situation where I wanted to keep some small items but separated so in SketchUp I threw together a 4-way insert separator that sits flush in the bottom of rikitheshadow's remix allowing 4 small separated storage areas.

It friction fits so it can be taken out if the full volume is needed.

I've included the SketchUp 2017 file if anyone needs to modify it.