Boots of Elvenkind 18 - 2 = 18 Um, that's 16.
Boots of Speed 20
Gloves of Missile Snaring 6
Gloves of Thievery 19
Goggles of Night 25
Hat of Disguise 24
Helm of Brilliance 24 -2 = 22
Helm of Comprehending Languages 25
Helm of Teleportation 17
Slippers of Spider Climbing 27
Winged Boots 21 +1 = 22