Anybody know of a vendor or have any good ideas on how to have convenient storage system in the trunk so things don't slide around and spill when coming home from the grocery store?

Driving and cornering slower is not an option!

 

Attach the cargo net as and "envelope" along the rear of the trunk so that when you open the trunk lid you can just set your bags inside the net then the will not move fron to back. That's what I do....

 

I agree with using the net as a helpful tool. Also, when I have only a few bags, I tend to hook the handles onto the little nubs that you attach the nets onto. They hold the bags pretty well.