Brooch of Shielding

Back in the good old days, every adventurer had one of these handy devices. That, and a pony.

A shield-shaped amulet
Warding ego
+4 AC
+4 EV

Desirability

Reasonably useful, particularly for those who have trouble with AC and/or EV, such as felids and ogres. Be sure to swap it out if something else becomes necessary, though.