Talismans
1) Amulet of Protectyness (25 pts)
The wearer gets the same armour and ward save as the model trying to wound it.
Good against all armies and characters with high saves - obviously !
2) Collar of Zorga (going cheap at 5 pts !)
Enemy mounts, monsters and chariot beasts need 6's to hit. Excellent, if your buddy is bringing a Dragon to the party
Arcane Items
None of them are that good really or they're a bit expensive.
I guess one appeals a little...
1) Staff of Sneaky Stealin' (50 pts)
Take one of the opponents power pool dice and add it to your dispel pool. The dispel caddy lovers will like this.