I found the activity ideas in so many different places that it would be hard to list them all, and some were just photos uploaded with no link, but I'll list the ones I can! Anyhoo, I hope you enjoy them! Happy 100th Day, y'all!
I found this idea on Ms. Steck's Kindergarten Kollections.
This idea came from Mrs. Williamson's Kinders over at Welcome to Room 36.