Hi this works for both slow eaters and inhalers

Milo used to take one piece of food out at a time move away from the bowl and then go back to the bowl. His sister on the other hand would be done before you put the food away. This is called an amaze a ball it is also used for treats but we use it for meals you place the total amount of dry kibble in the ball then they must move the ball with there nose or paws in order for the food to come out it only dispense a few pieces at a time so they tend to eat slower. I have found this to be the cheepest site to get this. Good Luck
Amaze-a-Ball