Hey, glass dildos and plugs are a thing! However they're purposely made out of a tougher glass like borosilicate glass.
Also please do not put bottles into your body. They can still collapse and hurt you.
Since were on this topic remember kids. Use toys with a flared base. Remember; without a base, its gone without a trace.
That's a good point too, I forgot to bring that up. Silicone toys are definitely best tho.