I like that my struggling students know the starting and ending pieces are the smallest. I also alternated colors. When students think they are finished they flip the pieces over to see if the cereal box is made correctly.
Of course, the possibilities are endless here. You could alphabetize or match up antonyms, etc.
We also worked on our Something's Fishy Compound Words stations today. I have a new student who has been very shy and when she found a match she was so excited. It was just what she needed!