Hey, love the game so far! I've been grinding all the way to night 15 to get the Sammy plush, but only got her to appear once when I didn't have the money for her. Also when I finish night 15 the game stays on the gameplay section without the HUD and doesn't take me to the store or even let me pause and quit.
I think it says a lot that I played until then! If I might make a suggestion, I've noticed plushies appear on the cameras, perhaps hiding them around and clicking on enough of the same character plush could guarantee that plush being buyable at the end of the night, or perhaps unlock it outright? Just a thought, keep up the great work!