200+ of the Best Preschool Themes and Lesson Plans, Tons of Pre-K activities and printables, Perfect for weekly or monthly themed learning or unit studies.
Ideas For School
2015-2016 weekly preschool theme ideas
Home Preschool 101
The list of what you can use is even longer... I have heard people of using cornmeal as sand for example.
For the kids
More than 250 preschool themes for you to choose from when planning out your preschooler's year
All About Me Mini Book ~The Twenty Something Teacher
Scammed by a Kindergartener
Early Childhood Themes. Thematic units for teaching preschool and kindergarten. Includes book recommendations, hands-on math and literacy activities, free printables and more!
21 great ideas to use when teaching a preschool weather theme. Hands-on activities that are FUN! Would be great for other ages too!
Science for Kids
Rainbow Mobile Craft for Kids - Perfect for Spring or St. Patrick's Day Preschool Themes - at B-Inspired Mama
Over 25 Preschool Theme Units that include crafts, picture books, fine motor, gross motor, math, literacy, music, science, field trips and more!
Kid Blogger Network Activities & Crafts
Awesome! 52 preschool themes! Great for kindergarten too!