Just made this last night, and it turned out great. Perfect for taking to friends and neighbors!
One large bowl of plain popcorn (pop it however you wish)
1 stick of butter
1 bag of mini-marshmallows
1 bag of seasonal candy
Melt the butter in a saucepan. Stir in the marshmallows. Pour over the popcorn and mix well, adding in the candy as you go.
*Tip: its a lot easier to mix into the popcorn if everything (including the bowl and your hands) are greased.