[toddscrappyphone123]

The easy way!

Use the "stone-impregnated roofing paper" cut to shape and painted black. In the old days when roofing paper was much stronger, you could walk on it without problem. Now the material is thinner and if you walk on it over stony soil, it tears through.
GAF Liberty 3 ft. x 34 ft. (100 sq. ft.) SBS Self-Adhering Cap Sheet Roll for Low Slope Roofing in Black 3732100 - The Home Depot

 

[toddscrappyphone123]

We have Santa Ana winds and during those periods, I just put bricks on them to keep them down. If you put them over pavers for support, you can stick it down with any silicone adhesive.