Business cards are always a good option for increasing your exposure.
I plan to take my camera into the streets to photograph the people of Blackpool, and having business cards on hand will let them know who I am and how to contact me.
They are also good to give to clients so they have your contact details, or so they can hand it to their friends and family as a recommendation.
I have designed a business card through Vistaprint which includes my name, social media details, website address, a contact email, and my logo. These will be sent off to print soon.