Do you know this toy?

Hi everyone. I have a toy machine that is from National Geographic from about 3-4 years ago. It is a kids toy. Its a projector that you put slides in. The 3 slides are called Night Sky, Rain Forest, and Ocean. I lost all my slides but still have the machine. Please help me! This was a really nice gift from my mom and if I can order the slides online that would be great! Please provide a link! Thank you so much!