Here are some great videos from Houghton Mifflin, put out by the Go Math Academy, teaching key concepts and skills. You have to register, but they are free. I just looked a few really good ones.
Here are a couple of resources that you may be able to use. The resource is called Studyladder and has activities for Math, English, Art, Science, Health, and a few others. It is a free sign up for educators.
Studyladder - Halloween activities
Here is a cute website that you could use with students. They choose a template and upload their photo from the student picture folder (common drive/last years photos). From their they can tweak the poses, head, head accessories, hair, face, skin color, trousers, shirt, skirt, shoes and background. When finished, they would take a screen shot and paste it into a Word document.
Next students would type a five sentence paragraph to entertain, inform or create a 3-step "how to" project.
This may take more than one session.