My setup is similar. I use stainless steel zip ties where it matters, and nylon (plastic) zip ties for any gaps. There is a tool that you can get that will tighten and cut the stainless zip ties. Sometimes, depending where you shop, you can get them as a bundle for a fairly reasonable price.
I've been wondering the same for my walkway and I'll comment to follow this thread. As far as the driveway, mine is uphill and I've always successfully used Tube sand (the cheaper one, not the washed sand I put in my run). Because of the sand comment, I did want to mention that traction sand is...
Hens go broody when you don’t want them to… and won’t go broody when you do.