If you’re a fan of DIY mini terrariums you can make several of them for Halloween. Only instead of planting succulents in them put there some creepy trees, mini pumpkins and other Halloween related stuff. By the way, if you put a light in such terrarium it could become even more spookier at night.
A Halloween mini terrarium can be made of a mason jar or any other glass container. For instructions showing how to do that, visit justcraftyenough.