I know it's completely the wrong season, but it's all I can think about.

Plot synopsis here, for those who've never seen it: https://en.wikipedia.org/wiki/Hocus_Pocus_(1993_film)

My casting ideas are;
Rey - Dani
Finn - Max
Poe - Allison
Han/Luke - Binx
Phasma - Billy (I just like her, plus the losing his head thing could be done by her being unable to see without her helmet somehow)
Hux - Winifred Sanderson
Mitaka - Mary Sanderson
Kylo - Sarah Sanderson

but feel free to go with your gut!