Candy and ice cream
Sweet things taste best and run out too soon, and it is the stopping that hurts. Putting down the last piece or hearing a no to more can set off a storm. The pictures below show the amount and where it ends.

Ice cream
An ice cream cone with colorful scoops and sprinkles
About this visual support
The cone in hand and the sweet bag on the table are among the very best things, and that is exactly why the end is hard. The taste says more, but the stomach, the teeth or an agreement says stop, and between those two wills sits one of the hottest conflicts of the day. It is rarely greed, more that a strong urge has to be braked with no warning.
Pictures help by moving the decision earlier. When the amount is set and shown before the first bite, two scoops, five pieces, one cone, the end becomes part of the plan rather than a no that appears when the urge is strongest. The child can see how much is left and what comes next, for example brushing teeth or another activity.
One concrete tip: lay the portion out where it can be seen and pair the last piece with a picture of what happens afterwards, so the sweet has a clear after. The transition becomes a known path, not a sudden stop. In the Routined app you can link amount, timer and next step in one sequence.