Click the flag, it will draw a flower for you. This program uses the Stamp block from the Pen extension to stamp a flower using the ball sprite. Challenge 1: Remix this project. Make it stamp a flower every time you click somewhere on the screen. Tip: define a function (called Make a Block in Scratch) that will stamp a flower, then call the function any time you want to stamp a flower. Challenge 2: Remix the project to do something more exciting, like customized flowers (number of petals, shapes of petals) or whatever you can think of.
I read a book 9 years ago "Coding Projects in Scratch" by Jon Woodcock. The book might look a little outdated today, but the coding concepts are still the same.