Looking at the safest of materials, let's try and come up with a comparison of which one may be the safest and still be useful for a variety of sex toys. The material has to be at least an 8 on the EdenFantasys safety range, so starting at the bottom of the range we have Plastic, WTP, Metal, Acrylic, Ceramic, Wood, Glass, and Pure Silicone. I will try and pull a similar product from each category for comparison. I may not have much experience with several of them, but I will add my two cents and hope that others that have more experience with some of these materials will do the same. Since I tend to like insertable toys with some curve, I will try to select ones designed for g-spot or prostate stimulation where possible. I will select toys with 1"-1.5" diameter as well.