Having all your to-do sitting in-front of you, at eye level, will greatly allow you to be familiar and engaged with what should be done. They are more powerful than any to-do list inside your notebook or an App hidden inside your smartphone or computer. Your inner voice along with your conscience will not allow you to procrastinate them for long, each time you will sit at your desk they will look at you back - waiting to be completed.
If you do have a long list to be done, it would be wise to keep them in a list or several lists and then copy the most important ones to a place where you can view them. It will save you the time to open the list and look for the most important things which is waiting to be done.
By just utilizing sticky notes placed at the most visible location, ordered from left to right by priority or due date you will get a fast view of the upcoming to-do.