Hi Richard (@iPadelfteacher),
Parents will be looking for some sort of fun and educational activities for their kids. And safe too. They probably won't know what littleBits are (unless they watch Rick and Morty, and then they'll think it's food) so let them know it's technology oriented fun for kids. Make the flyer picture-centric, with bright colors.
Are you a member of a littleBits Chapter? If so the company will have resources for you. Click on the COMMUNITY link at the top of this page to find out about that..