You can Imbue Jewelry with Mysticism, Focus and Magery, plus two other properties, if it will fit your suit. There's also a talisman that has +5 Magery, and Enhance Potions.
Spell books can have Magery up to +12 (I believe) on them, crafted. 2 Event spellbooks have +15 magery on them (and the Tome of Lost Knowledge, from Treasures of Tokuno, is fairly cheap).
You could have as much as 110 skill from Jewelry, Talisman and spellbook, but odds are your suit would suffer in some areas.
However, unless you're going to be spamming damage spells, Eval isn't important.
Eval Int is NOT needed for any of the following (it may influence some, but isn't absolutely necessary for success):
a. Healing & curing spells, as well as the poison spells and resurrection (effect based on your Magery skill)
b. All Summons (6 of the other 7 8th circle spells, plus blade spirits and create food)
c. Travel spells (recall, gate travel, Mark, teleport)
d. Dispel/Mass Dispel/Dispel Field (Magery skill-based, IIRC, at least for your own summons)
e. person-affecting non-stat spells (Night Sight/Invisibility/Reveal/polymorph/incognito)
f. defensive spells (protection, arch protection, reactive armor, magic refection, which are affected by inscription)
g. magic lock, unlock, telekinesis (and the second is usually trumped by lockpicking)
h. Mind blast (and magic arrow? UO page says it's affected by insscription not eval).
i. Most Field Spells (except Paralysis field?)
What it does affect:
I. The 4 curses (curse, and the 3 first level spells it emulates)
II. the 4 buffs (Bless, and the 3 second level spells it emulates)
III. Most Damaging spells that are area or targeted: harm, fireball, Lightning bolt, chain lightning, meteor swarm, energy Bolt, Earthquake, flamestrike, paralyze, Explosion, Paralysis field.
IV. Mana Drain & Mana Vampire
Final summary:
Eval is only needed for 21 of the 64 spells, and if you're going to be using Magery for Summons, healing and travel, and not for spamming damage, you don't even need it.
Even Mind Blast, which is lower level and doesn't require eval, does comparable cold damage at 120 magery and 125 Int stat, to what E-bolt does as electrical damage with 120 magery, 100 eval and 100 Inscription. And, of course, you won't have inscription.
So, many people who use magery primarily for the Summons, travel and healing (most T-hunter templates, especially Bard and tamer variants) don't have Eval at all. after all, most level 5-7 map creatures have Resist Spells skills at GM, Legendary, or even higher (I've seen wild Greater Dragons in the mid to high 130s). Trying to have an appreciable effect on stuff like that even at 120 Eval, is almost impossible. That's typically a Disco-Bard's area, reducing the defenses (then letting pets, summons or other spawn do the grunt work)
One of the common jokes is - "If you're worrying about having Eval to cast attack spells on an Ancient Wyrm, you're WAY too close."