User blog comment:GoosebumpsArt/GbA's Wild Predictions: Goosebumps 2. (Spoilers?)/@comment-31910723-20180712164709

>The witch is created by the machinery that we see clips of in the trailer

I think the kids will try to create some creature with that machine, to help them fight the monsters.

>Slappy says, "Who you callin' dummy, dummy?"

And more bonus points if he says that to Madison's character.

>Madison Iseman's character being an obnoxious teen on a cell-phone...

Just like in the second Jumanji movie.

>Slappy will laugh exactly 26 times.

27 if you count with the credits.