There are tons on there. You might need to search for a specific prop. One place to find lots of things is Allen Hopps videos. Look up
Stiltbeast studios and you will find lots of things.
His work is AMAZING.
You can search for things like cauldron creep, animiatronics (sp?), graveyard lifter, halloween prop hacks, etc.
Also if you are not familiar with Haunters Hangout, join their Facebook site. It is an open forum but has 10,000 members and there will be LOTS of posts. Awesome place.
how to haunt your house. com also has some cool stuff.