Wands.
Not Harry Potter wands, god no.
D&D wands. Where you buy/find a wand bone (hehe) and then enchant it with a certain spell. I think they'd be different than staves by;
-Being Faster
-Lower power/higher cost to put a spell on them
-One handed
I know, they're basically just the same things as staves, but its about the look. A mace does basically the same thing as a sword, but they look and function differently. Being an old school D&D player, I think this would be awesome, because you have something to use after your magicka runs out (it ran out so fast in OB) and can still keep something in one hand.
Orbs
Held in one hand, they give another enchantment spot, and can significantly increase the damage of one school of spells.
Just an idea, take it with a grain of salt.