I created this hook because the EV6 has no grocery bag hooks, and no screws or seams to attach a home-made hook.
This hook is designed to fit on the aftermarket cargo cover available here: https://www.amazon.com/gp/product/B09ZQMF6BM/
I created two versions, standard and strong. The strong version is thicker, but I'm not certain it will be necessary. I will see how the standard version (already pretty strong) holds up over time in a hot car.
This installs by wrapping around the cover, but does not interfere with the motion of the cargo cover.
The standard size can be attached by first hooking the small lip over the lower section of metal where the cover pulls out, then forcing the back edge up and over the cover housing. It will snap firmly in place. I have not tried this method with the strong version, as I haven't needed it yet. It may be difficult to install this way.
I printed these with PLA but may need to reprint with something more heat tolerant. For max strength, I used 5 wall loops and 35% infill. .2mm layer height.