With magic items, out of combat healing is not much of a problem, what you really need is to deal with debilitating conditions and the ability to heal giant chunks of hp in a crisis.
The Touch of Healing feat can do a lot towards making a Druid sufficient at keeping the party alive.
At higher levels, the Rejuvenation Coccoon spell (SpC) is only spell level 5 (1 level below a Cleric's Heal, and 2 for Druid) and is basically the same as a heal -- 10 hp/CL, up to 150. The only downside is that it takes the target out of combat for 2 rounds. But, they're protected at least, and if they're really in trouble, they can deal with some quiet time.
And yeah, the lesser vigor spell (in wand form) basically makes out of combat healing a moot point.
The Healing Lorecall spell, if you're willing to take heal ranks, can make Bards, Druids, and Rangers (they can cast it too, iirc) sufficient at removing negative conditions much of the time.
At lower levels, healing belts are decent for large amounts of in-combat healing.
There is a Bardic music variant in C.Champion for healing, I think, might be worth a look.
If you can't help a wounded ally immediately in battle, the psion or arcanist could use powers/spells like Time Hop or Resilient Sphere to keep him or her safe until the enemis are defeated.