Ghosts: Use a knife to cut a ghost shape (it doesn't need to be perfect!). Place onto the warm toast and add raisin eyes. (You can butter the toast if you'd like.)
Frankenstein: Spread a thin layer of peanut butter on the toast. Use a melon baller to scoop out eyes from the kiwi. Cut the remaining kiwi into a rectangle nose and a small mouth. Add 2 tablespoons chocolate chips to a heat safe bowl and melt for 30-60 seconds. Use a knife or spoon to spread on as hair and a scar.
Pumpkins: Spread toast lightly with cream cheese. Peel the clementine and separate the segments. Arrange as pumpkins and use small pieces of kiwi as the stems.
Notes
Nut-free: Use sunflower seed butter instead of peanut butter.
Gluten-free: Use your favorite gluten-free bread.
Dairy-free: Use dairy-free sliced cheese and cream cheese.
Plan to make these right before serving as they are best when eaten fresh.