Any craft store in the scapbooking/card making section. They have all different kinds of adhesive bling that can be used as eyes. I have found some really cool iridescent ones that make great walleye eyes.
Michaels / JoAnns Fabrics (I get weird looks in here buying rhinestone stickers, fishnet fabrics and wedding vails) / Hobby Lobby...any place like that
http://www.joann.com/me-my-big-ideas-rhinestone-stickers-96pk-many-colors/xprd1025096/