Imagine a story: Everything I need to know before I'm five
This includes two books, one of them an interactive board book that teaches you left from right, and a set of plastic letter popsicles. The popsicles have both an upper and lower case letter and snap together. They're also matched by color.
Sources for materials
Everything I need to know before I'm five by Valorie Fisher (hc): 9780375868658
Left hand, right hand by Janet Brown: 9780764159244