Here's a quick list of items that do NOT break channeling spells such as Voodoo Jester's Ultimate, Pollywog's Grapple, and Succubus's Ultimate. I'm fairly certain this works across all channeling spells but have not verified.

Frostfield Plate
Shrunken Head
Void Talisman
Assassin's Shroud
Genjuro
Barbed Armor

Have fun Newerthians