This is a cup holder insert I made for my couch so that I can hold oversized coffee mugs and not spill anymore. Nothing fancy, I'm sure someone can do better, this is the first model I have ever made. I have included the fusion 3d file so that you can edit the sizes to meet your own needs. Please share anything you generate based off this, I would love to see a fancier version, less filament usage, stronger, whatever you can optimize.

I left the base solid because there are so many cups with different base diameters that I wanted it to be universal but I'm sure that's adding a lot to the filament usage.

Green one is an earlier version with lower wall heights as an example of different configurations. You should be able to edit it in fusion.