http://pokemondb.net/ev
All these berries can be obtained by the berry master on route 208 and they LOWER EVs. There are no EV raising items other than vitamins. Also the wings.
#21 Pomeg Berry (HP)
#22 Kelpsy Berry (Attack)
#23 Qualot Berry (Defense)
#24 Hondew Berry (Sp. Attack)
#25 Grepa Berry (Sp. Defense)
#26 Tamato Berry (Speed)
During battle, these items raise the evs. You can get them at places that want battle points as money. They are worth 16 BP, from my memory.
Power Weight (HP)
Power Bracer (Attack)
Power Belt (Defense)
Power Lens (Sp. Attack)
Power Band (Sp. Defense)
Power Anklet (Speed)
Don't forget a macho brace
>The Macho Brace lowers a Pokemon's speed in battle while held, but doubles the amount of EVs gained. A Starly normally provides 1 Speed EV, but with your Pokemon holding the Macho Brace, it will receive 2 Speed EVs.
EXP Share passes evs as well.
>Since any Pokemon gaining experience points gains EVs, the Exp. Share item allows Pokemon to gain EVs without battling. It will gain the same base EVs that the Pokemon in battle gains. The Pokemon holding Exp. Share will benefit from its own Pokerus (see below), but not from the item or condition of the Pokemon in battle.