This little ball does not look like much but it is actually a great little food puzzle. It can be quite challenging as it has three levels that the food must fall through to dispense out the opening. It is small and doesn't hold too much food which is great for cats trying to slim down.
This toy is very inexpensive. In fact, acquiring a few of them would be ideal. They could easily be hidden around the house for a full day of rations. It also functions well being inserted into a larger food puzzle for increase challenge as shown in the photos below.