50 Alphabet Activities for Preschoolers - activities for recognizing letters, learning lowercase and uppercase letters, and even letter sound activities
A sticker name recognition activity
Recently, I found a picture on Pinterest that suggested highlighting letters on paper then encouraging children to trace the highlighted letters. I love it! The dashes that are most commonly used are obtrusive and really don't encourage tracing, but highlighting works great. Use this for teaching preschoolers to draw shapes, their name, and even for cutting activities
The Stay-at-Home-Mom Survival Guide: Preschool Activities This is a GREAT site. She has so many clever and easy ways to work with your preschooler and have fun at the same time.
Printable ABC Book Learn Your Letters -- you can take it everywhere!