I give Vitality AND Spirit so far (now level 20) from the beginning boosts via equipment, so I search for them and found very nice boosts !
And like Raze said: enchantments like Life Line and Increased Mana are nice ! And all things with Mana or Health boost also + the enchantment Mana Leech or Life Leech on a weapon
For example:
a)Laiken's Sword L18 : 35 HP (use it for the Summon Mastery +2 skill boost)
b)Shield : 1 L11 with + 5 to Spirit and 1 with + 5 to Vitality (found yesterday)
c)Mister Shooty L16 : 24 HP (+ 1 to Ranger Stealth) - enchanted it yesterday with Mana Leech L7
d)2 HW L16 with Mana Leech enchantm L8
e)CRS : Barbarian's Heavy Army Cuirass L19 : Vit +6, Spi +5, Life Line L6 (+15 HP) +2 empty charm slots!
f)LGG: Shaman's Regular Army Leggings L9 : Vit +5, Spi +5, Life Line L5 (+12 HP) +2 empty charm slots!
g)HMT : Priest's Heavy Battle Helmet L20 : Spi +4, 2 empty charm slots
h)GLS : 1 with Vit +6 & 1 with Spi +4, each with 1 empty charm slot
i)BLT : Wolf's Star Belt of Aleroth : Vit +4, +26 MP, Healing Aura L4
All together I can give only Spirit a big boost (around +23 = 23 x 7 = +161 MP ) already, even without boosts from yewellery included !
