If games work, why not gamify your idea? The printer and paper approach doesn't work well for people on the move. We need a pure online version that's accessible from everywhere: home, office, customer sites, vacation spots, and during commutes. Even better: add a voice interface too.

"Hey assistant, what do I have to do?"

"1. Send email to Bob"

"2. Clean your desktop"

"3. Read paper XYZ"

"...and more"

"OK assistant, set 1 as done"

"Congratulations, great job! You achieved the bronze badge this week by completing 70% of your tasks!"