Extra mission
An extra mission lands very differently depending on whether it sounds like a challenge or like another line on the list. The card below gives the mission its own frame, with a star, a clear start and a clear finish.

Extra mission
A yellow star with the word extra, a rocket and blue arrows inside a dashed circle.
About this visual support
From a child's side, the difference between bonus and burden is the frame around the job. The same thing, carrying out the cardboard or watering the plants, can be a game or an extra duty depending on how it arrives. Left loose in a day that is already full, it turns into the second one almost every time.
A card of its own with a star marks the mission as something other than the usual routine. It sits beside the list rather than on top of it, and your child can see straight away that this is one single thing, not the start of a new row of jobs. Give the mission a time frame you say out loud before you start, something like the length of one song. Short and bounded is what lets an extra mission feel like a chance to show what you can do.
The pictures below are free to download. In Routined you can add extra missions as their own item beside the day's routine, with a timer and a star when it is finished. You can try the app for 14 days at no cost.