From Seeking the Heart of Wisdom by J. Goldstein and J. Kornfield:
When we let go of whatever we are clinging to, we can appreciate each thing as it is. There is no scarcity of things to appreciate but only a scarcity of moments when we are capable of truly seeing because of how often we are unaware, unmindful. ... When the mind is still, we can see a magnificence in even the most ordinary things--the vividness of a sunset, the warmth of a smile, the simplicity of serving a cup of tea."
How much beauty have you missed out on today because you were distracted by other, seemingly more important, things? Notice how the authors put a sunset--a classic--in the same terms as a cup of tea. This is a most wonderful "side-effect" of mindfulness. When you are truly mindful, each and every thing is magnificent, a true beauty. I am being misleading by calling it a "side-effect." In reality, such vividness of experience is our very nature. We only obscure it in the way we use (abuse?) our minds, craving this experience, mourning the loss of that experience.
Our practice is to unlearn the habits to which we are addicted and unleash the perfect mindfulness that is our very nature, our Buddha-nature.