I noticed there was Halloween Taboo, Monopoly and Pictionary.

Was thinking, what about 'Halloween Tribond' (The 3 things have to have something in common, like: Tree, Elephant & Car=all have trunks), not sure it will be possible, but hoping maybe people can add to it. I just thought it may be possible with the help of a large number of creative people, the only thing I could think of was:

Hannibal Lector
Jaws
Piranha

= eat people

Gizmo
Stripe
Mogwai

=Gremlins


Other suggestions?...