What do your kids think about your driving?
are you talking about protection or seeing IR Full face plastic shield with welding shade rating cost about $12 depending on coat of the head mount. Welding supply Viewing IR is an active electronics task involving collecting the image with a sensor and showing it on a screen and that is several hundred dollars.
When I laid mine. First I got the 3/4” or 1/2” gravel (including particle sizes down to fine dust) down. I used a long board to spread it originally. I ran grade stakes around the edge. I ran a cord from stake to stake, very taut. Then I hung a small level on the cord at the cords mid-point. I could measure down from the cord to the surface of the gravel to check the slope. I had a slight 1/4 inch per foot slope away from the doorway to run water off the area. My slabs of stone where not uniform in depth so a perfect surface was not needed. I had to dig and shape some to get each pieces edge lined up with the previous slab. I had both a 2 foot and a 4 foot level I could lay on the surface to check my work. First I laid out the stones in general to look at them then I fitted them like a puzzle in an area next to my site. I could move them in one at a time keeping the general fit I had worked out. I did this gradually over several weeks. I had no way to cut pieces so I had to just look until I found one to fit. I tested each piece for rocking, I'd lift and add or remove sand to settle the slab to fit the others by the 2 foot level and also the whole slope every few stones with the 4 foot level. I originaly filled joints with builders sand and then layers of mulch. Use a stiff bristle brush and squeegee it it. In the first area I did Irish moss, Sagina Subulata, grows between the pavers and in the area under the trees I get self seeding violets. They tolerate foot traffic and are all blooming right now. The violets are both V. odorata and V. labradorica so I have two colors blooming.