I like Spell Storing weapons for a magus. It lets you drop another spell in a spellstrike, triggered after you hit. My half-orc magus keeps Vampiric Touch in there for when he's getting low on hit points. If I go all out and smack someone with an Intensified shocking grasp and trigger the vampiric touch after I hit... they're usually not happy campers.
Additionally, it's usually pretty easy to keep a few pool points around to put the spell back in the weapon before you go to sleep. Spell recall is nice for that.
Most of my other items are pretty normal for a front-line fighter, as I'm doing a fightery magus, with a bastard sword and the heaviest armor I can wear.