Hi, your 1st pic shows enough for me to recognize it right away. It’s fairly common, and Sammy got them a lot when she was younger. They are a kind of mucus, and it is annoying to the bunny but not serious or dangerous. If it’s on the edge like that and you can touch your finger to the eye to slide it out (have trimmed fingernails first) then it will help Beans. He will probably hold still for you. My bunnies always appreciated my help in cleaning the boogies out of the corners of their eyes. Sometimes she got those large ones that floated in the middle, and I could see her struggle with it. I almost always got her cooperation in gently moving it to a corner or edge of her eye to finally pluck it out. Otherwise, you can wait a while and see if Beans works it out himself by rubbing his eyes with his paws. You don’t want to scratch Bean’s eye yourself, so if he resists you let him go. After a try or two, Sammy seemed to know what I was doing and let me. You can also try to get it with a soft tissue, but not a pointy corner of the tissue.
It is a sort of mucus, and I once asked my vet about it and she said it was nothing to worry about. For some reason Sammy stopped getting them about a year ago.