One of Mary’s gardening buddies gave her a Taylor rain gauge he picked up at a closeout sale, but the exceedingly thin aluminum holder obviously wasn’t up to the task:

I briefly considered 3D printing a better bracket, but came to my senses:

A generous fillet of tan JB PlasticBonder holds the thin aluminum clamp ring to the top of the dagger spike:

The spike is 6.3 mm acrylic and should survive for a while despite the stress-raiser corners. The next iteration will have radiused corners and could last longer:

The holes will fit 4 mm screws, although the OEM holder isn’t good for more than 3 mm.
The LightBurn SVG layout as a GitHub Gist:
Took longer to write it up than to do it, even counting mixing the adhesive.