Based on a lesson of Ibn Qayyim al-Jawziyyah:
Our Knowledge - Wasted by not taking action with it.
Our Actions - Wasted by committing them with out sincerity.
Our Wealth - Wasted by using on things that will not bring us ajr (reward). We waste our money, our status, our authority, on things which have no benefit in this life or in akhirah (hereafter).
Our Hearts - Wasted because they are empty from the love of Allah, and the feeling of longing to go to Him, and a feeling of peace and contentment. In it's place, our hearts are filled with something or someone else.
Our Bodies - Wasted because we don't use them in ibadah (worship) and service of Allah.
Our Love - Our emotional love is misdirected, not towards Allah, but towards something/someone else.
Our Time - Wasted, not used properly, to compensate for that which has passed, by doing what is righteous to make up for past deeds.
Our Intellect - Wasted on things that are not beneficial, that are detrimental to society and the individual, not in contemplation or reflection.
Our Service - Wasted in service of someone who will not bring us closer to Allah, or benefit in dunyaa (world).
Our Dhikr - Wasted, because it does not effect us or our hearts.