I made up some green flubber, gak, or slime with equal parts Elmer's glue and liquid starch (found with laundry detergent). No matter what you call it the polymer really does look (and kind of feel) like eggs! I mixed it together with my hands mostly then added green liquid food coloring. I cut circles out of green foam for the yolks.
E enjoyed this squishy, squirmy sensory material. She used plastic safety scissors, a fork, plate, and a rolling pin in her play.
D can't join in this sensory play yet but he celebrated by wearing his green eggs and ham shirt. He doesn't seem TOO disappointed.