Open Question: 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!
Hi again. Just note: it is grey and looks like a boombox. On top is where it projects it is a small clear dome. In the lower middle there is a blue button and behind one of the sides there is a volume adjuster. Remember, I DO NOT need the machine, I need the 3 slides. Thanks again!