In the past I have bought my safety eyes for my stuffies from a shop on etsy called Shop 6060. She has been really wonderful to deal with. But I saw this big set of eyes on Amazon for only $15 and decided to give it a try.
It comes with a range of shapes and some plastic washers. They've been great so far! I made this guy"
And these guys:
And will make more too! But will also go back to 6060, since I love supporting handmade shops.