Teachers Plant Seeds that Grow Forever. My boys LOVED making these DIY Seed Bombs to give to their Teachers for Teacher Appreciation Week. This would be a great Preschool Earth Day Lesson too! DIY Seed Bombs were fun, simple and cheap, plus the boys did it all on their own. I highly recommend this Kids DIY Project Idea for Mother's Day Gifts, Teacher Appreciation Week Gifts, Gifts for Grandmas and Earth Day Craft Projects.