Perimeters: 45, Small perimeters: 15, External Perimeters: 30, Infill:45, Solid:45, Solid Top: 15, Gaps: 10, Bridges: 45
Widths are: Default: 0.5, First Layer: 0.6, Perimeters: 0.6, External: 0.4, Infill: 0.3, Solid: 0.4, Solid Top: 0.3
Didn't take anything really special to print. I could probably do a lot more tuning if I was making more of them.
I've since printed several more of them. I did one in clear PETG, but it didn't look very clear--turned out pretty cloudy. It's the one with the best fit, though.