I had some mismatched plastic Easter eggs that did fit together. I made a cat toy from some of them. I put about 5-8 pieces if unpopped popcorn in one half, squirted some superglue around the edge, & put the other egg half on the glue, clicking the 2 halves together to seal the egg. Then I took a piece of ribbon & superglued it around the seam. Be careful not to burn yourself--use something to push the ribbon into the hot glue, like a chopstick or the point of a scissors. I used some shiny ribbon to catch the light. Then I superglued another piece of ribbon around the egg in the other direction. I pulled off the extra bits of the cooled glue. Voila! A fun toy for the cat to bat around. I'm giving a couple to some favorite cats for Easter, but they are fine for anytime. international