Safety eyes are easy to use. They come with plastic washers that fit on the ridged posts securely. They’re durable and machine washable. This pack contains 10 high-quality plastic washers.
I use 12mm eyes on many of my soft toy patterns including Humpty Dumpty and Emma the Doll.
I’ve sourced these eyes from a toy making supplier and they meet industry standards, but I can make no claim as to their overall safety.