during the 3/7 moment, you can find a book out-of-bounds(there's a trail of sharp baldis leading to it). but sadly, it's not clickable. however, it is clickable in the 5/7 moment. and it sends you to an "ALT" world after giving you a quick message in a circle. I've only been able to find JOE and very large cans.
it also seems like the objects dont usually get deleted (like the flame or 1st Prize). one of those objects happen to be the baldi you click on in 4/7. this means if you click on him in 7/7 he gives you his speech even if its already going on. you cant click on him in 1/7 though. those are the only places I can find him in unfortunately, but I have a feeling he might be in the Alt World