Most of us take time to show our appreciation when someone helps us do something or serves us in a big way. So, the next time you feel that someone's efforts deserve to be acknowledged, leave them one of these cards. Your actions will go a long way to improving their morale, confidence and feeling of being valued. Even in its simplest, most basic form a “Thank You” a show of appreciation can prove powerfully motivating for employees and help create a positive workplace.