This will definitely make anyone who walks past your beautiful bouquet do a double take. Follow instructions to make them here.
A Head In The Fridge
Pretty horrifying and minimum effort involved. You just need to get your hands on a laminating machine. Here's a step by step guide.
Crime Scene Towels
Just rob some of your mam's white towels without her noticing, cover your hands in red food dye and you're good to go.
Outdoor Demon Eyes
Take a cardboard paper towel roll, cut out a scary eye shape, crack a glowstick, sellotape it inside and you'll be scaring the neighbours in no time.
This really couldn't be easier. Grab some white candles and one red one. Use melted red wax to create the blood effect.
Now all you have to do is sit back and wait for a housemate or family member to scream the house down.