in the sprint i like to put a main big tasks of something like main menu , and then add child tasks to it as what the main menu should have , and structure it like tasks , even it was so simple as adding a button and adding button sound , i found it very clear to even remind me of those little things that after all the work i might skip it , especially the button clicks sound , 

so even the tiniest things i put it as a task , and it really feels good after you you complete it and track as done, it encourage you to do more!