This is a completely cheap and easy prop effect for your low budget indie film (or backyard film)… a severed finger. It's actually a super-cheap way, but see if you can improve upon it. See how to create a severed finger movie effect.
ConnersTutorials is all about showing you how to make quality, cheap, and awesome movie effects with a few easy film tips and tricks, including digital and practical effects. If you're into DIY filmmaking, these SFX will surely help you graduate in backyard cinema.
Warning: Do not use these special effects in public, as people may believe the props are real. Conners Tutorials will not be held responsible for negligence.