Rewarding todo completion

[homostellaris]

Story

As a user, I would like completing todos to be rewarding, so that I feel motivated to continue being productive

Ideas

• You have to trace a tick with your finger to complete the todo, a bit like in the Harry Potter and the Philosopher's Stone video game.
• Over-the-top animations when you complete a todo.
  • Could be full-screen.
  • Could be randomised so the user is always excited to see what they get next.
  • Could be customisable.
• Could be a traditional swipe left/right but it leaves a flaming "you rule" message in its wake for a second before disappearing.