It would be nice to see items that allow the player to summon monsters, creatures or NPCs to support them in combat, for example an item that summons a small group of goblins to help the player.
Or a trincket with a chance to summon a goblin with each cast or attack.
Or an item to summon a small pack of wolves to aid in combat.
If there are summoning items, I would like to see an item that summons little demons.