I'll give it a go outside later when it's dark.

In the meantime, I found what HAS to be a much safer laser grid. As you mentioned, still a laser and could do some damage, but not one that will cause instant damage.

https://www.amazon.com/dp/B08FMP388W?psc=1&smid=A2DH3M7YS0X5P&ref_=chk_typ_imgToDp