I came across a free reproducible idea for Valentine fun from The Mailbox online today:
The Mailbox is a wonderful resource for teachers and childcare providers. There are five different versions of the print version of Mailbox for teachers of different age/grade levels. Copies of Mailbox magazine are available for checkout at the library. The library also has several copies of The Mailbox Yearbook in a variety of different age-levels. These are hardcover copies compilations of previous years' print magazines.
*Book cover: Valentine's Day by Anne Rockwell, illustrated by Lizzy Rockwell