Todo list organizer

I created this Todo List for my son. Within about 6 months of posting it on my Facebook page, I started seeing variations of this product for sale all over the internet. Probably just a coincidence, but here's my free contribution to the world. The slides push in, they're not perfect but they stay in the slots and slide quite smoothly. It's about the size of 2nd generation iPad. It prints without supports. Enjoy!