The Vitalist class from that 3rd party psionics book is supposedly an effective in-combat healer, though I haven't seen one in play.
As far as cheap out-of-combat healing goes, a wand of infernal healing will heal 10hp (fast healing 1 for 1 minute), which is better out of combat than a wand of cure light wounds, and is a cleric, sorc/wiz spell. UMD to get lesser restoration from the paladin spell list on a 1st level wand is another easy trick.