You may not keep a door prize if your state agency paid for you to attend any conference, seminar, trade show, or similar event. Should you win a door prize at the event, the prize belongs to your agency and the agency may choose to either keep the prize or dispose of it in accordance with state rules and regulations.  But, if you pay for the costs of attending a conference, seminar, or similar event and attended on your own time, the prize is yours to keep.