This is a project where you can design your own park/playground. First, press one of the objects on the side bar, to get that object. Then click anywhere on the grid to place it down. While it is still following your cursor, you can rotate it using the left and right arrow keys. To delete an object, click on it.
To see my other projects go to https://scratch.mit.edu/studios/4670365/ I will try to respond to all comments.