Halloween is all about style. Using horror movies as your inspiration for halloween decoration is a great idea, but dont mix and match genres.
Gritty realistic blood and gore don't work together with plastic neon frankenstein masks. Choose one style or the other when you decorate for halloween.
Rubber bats on elastic are great, but they push you down the kitch 'munsters' style route which is great for parties but not really scarry.
When decorating a house for halloween I prefer to create a single centre piece and work out from there. For example, we once got hold of an old witches cauldron, so the house got decorated as a witches cottage.
The following year we went all 'curse of the mummy' so we used absolutely none of the decorations from the previous year. There is n point putting a witches broomstick in the corner of an ancient egyptian termple and expecting anybody to be frightened.