A few items I can think of off the top of my head that I think you would benefit from:
Fine Antique Ring - This little beauty will reduce the mana cost of your spells by 10%. You get it via
this quest which should be cake for your bard friend to solo, or you can most likely buy the 4 components (all droppable) in bazaar for between 50-100 pp. The ring is good almost to 50 (the focus effect works on spells of lvl 44 and under). This quest is insanely easy to do for such a high-utility item.
Another item which will help you conserve mana is the
Batfang Headband. There are other items with extended enhancement II but I felt like the Batfang Headband was best for my chanter. EE II will allow your buffs to last longer, meaning you have to cast them less often. If you prefer one of the other EE II items, go for it. The Batfang Headband can be looted off a mid-30's ogre in West Karana which your bard friend should be able to solo. Dunno how long he will have to camp it, but you might get lucky. You should also be able to pick one up in bazaar fairly cheaply (500pp or so, ballpark), if you choose to go that route.
You might benefit from an item with
Spell Haste II, but all that does is make spells cast faster. It won't save mana, but might help get you out of tight situations a bit more easily.
Also you can do the quest to get the
Stein of Moggok at your level without much difficulty. That quest is tailor-made for enchanters, just make sure you have all your illusion spells and the Benevolence spell. Might take a few hours to complete but the end result is quite worth it. The Planes of Power expansion made it really easy, otherwise I would invest in a SoW potion or have your bard friend taxi you around, because you will need to cross Norrath once or twice to do it. Or buy it in the bazaar for 200-400pp.
I second the notion on
Earring of the Solstice. I am about to pick one up myself for my 43 chanter, and wish I had done so long ago. Should be able to get the 9 components in bazaar for around 4-5k.
If you don't have the research-only spell
Mesmerization I would definitely search bazaar for it, get the components (Tasarin's Grimoire pg. 26 left and right)and have someone combine it for you, or work on research skill and do it yourself. This is a REALLY important spell to have in your repertiore.
Other than that, I agree with other posters in this thread. When I look for gear upgrades, I look for a nice mix of INT, CHA, Mana, and HP. Resists are a nice bonus too.
Also, the prices I noted are for Rodcet Nife server. Prices on your server may vary (widely) from what I have quoted.
Oddly enough, I am in the same boat as you and Kerik. I quit for over a year when my chanter was 22. Things sure had changed a lot when I came back. Good luck getting your gear! If I think of anything else I'll come back and post it.