Oliver Preston My Plants Commit Suicide 2012 Slim Appointment Calendar. Oliver Preston’s unique wit and comedy illustrations features in this slim format wall calendar which is perfect for those with smaller wall spaces to fill such as in the kitchen and utility room and home office. With a unique highbrow edge and feel, each of the monthly illustrations is sure to leave you with a smile! The vertical calendar grid has ample room for your own notes and dates and includes pre-printed national holiday information.