Magical Maths. For young and old and Magic of the mind The Fun Of Magic for Kids. Bringing magic into children’s  lives an alternative to the smartphone General presentation ( Not Themed)
Try to limit participants to no more than 20. A room with Audio Visual facilities is a big plus.
Having a good script is essential, look at   Danny Orleans kids presentation of a book test,  Totally Scripted
How to get gigs in libraries Click Here
PDF for routine Equivoqué.