I also got this part to make before working on the stainless project—nothing too special about it, basic one and a half operation part.
The unique part about it was that there was a circular channel near the center of the piece that would hold an o-ring and required an excellent finish to get a proper seal. The size of the hole was approx 0.095" (not actual size) and didn't have any cutters that would fit it all that well, so I had to use a 1/16" endmill (0.062") and used the slot toolpath for the first time. The idea was to slot out a groove in the center of the channel, then use a contour toolpath and ramp that down at a pretty steep angle on either side, widening it to a few thou under its final width. And finally, take another contour starting from the bottom face instead of ramping to finish it off. It worked surprisingly well and got an excellent surface finish on it, the only area I'm not very pleased with is the lead-out/in of the cutter where it dwelt for a fraction of a second, just enough to leave a mark.
I'm continually finding these dwelling marks from the tool to be quite annoying and leave some indecent surface finishes, I need to do some more research, but I believe there is some setting I can play around with to allow a smooth arc raise off the surface.
Since there were only features on one side of the part, I was able to flip it over in the hard-jaws and cut off the base plate manually (thus 1.5 operations). From start to finish with programming, the whole part took about two hours, then tossed in the tumbler to remove any burrs.