How do I add a panning Z-coordinate only texture to my material?

I’m making a weapon shop and I want to add a periodic shimmering effect in the emissive channel on top of the meshes in the Z-coordinate so the player knows which objects can be selected for inspection/purchase and which ones aren’t. I keep running into problems with texture objects not panning, and panning texture samples not looking right when I try to make it Z-only. How can I accomplish this?

You can use the WorldAlignedTexture material function for this. Instead of directly connecting an Absolute World Position, add Time to its Z component. The XY Texture output will output what you need.