Add milk powder to the jar. Tap it a bit to make sure the layer is even.
Slowly add cocoa powder to the jar. Shake it a bit to get the layer even, but not too much or it will mix with the milk powder.
Slowly pour the sugar into the jar, then sprinkle the salt on top of the layer of sugar.
Add the chocolate chips and fill the rest of the jar with marshmallows.
If you are adding candy cane spoons, put them in a pretzel bag and cut the extra bag from the bottom according to the length of the spoon.
Use twine or ribbon to attach the spoon and tag to the jar.