Ideas:
1. Soul Orb - When this item is held by a hero, whenever that hero kills a non-hero, non-mechanical unit, he gets x bonus hp.
2. Rush Bar - A bar of candy from the ancient land of Candyria. Known to make you have immense attack and movement speed when eaten, but gradually decreasing health.
3. Rhokrbar Cream - A cream known to give the user x bonus hp per second when used. Lasts x seconds.
4. Voodoo Toy - A weird voodoo toy. Known be enlarged and make a rampage when reciting a secret chant...
5. Mana Cloak - A mana-proof cloak. Makes all incoming mana drain or mana damage attacks useless. Lasts x seconds.
6. Double Blades - Two sharp, knife-like blades. Can give x bonus damage if the wielder is battling. Only gives bonus damage if they are a melee hero.