Toys should have a tooltip explaining what they do both before you get them and after they spawn near your bowl, since you didn't see one I think it is a bug, I should check it out. As for the UI having the useless x1 quantity, it was a last minute change that cereals have a "persistent" state (some cereals getting new tags or accumulating value, like boats eating fishes and adding their value to themselves) and didn't have time to either find a way to group identical cereals or change the UI, since the game was made for the 7 days Brackeys jam.