Where can i get accessory items for my acessory case on pokemon diamond?

Does anyone know where i can get accessory items for my accesory case on pokemon Diamond?Where can i get accessory items for my acessory case on pokemon diamond?same as what they said but in hearthrome city you can go for a stroll with a cute pkmn but every 200 steps that pkmn will be holding an item depending on what pkmn it is it will get an item could be rare or not and it could also be an accesorry item or not it could also be a berry or go to serebii.net and click on pkmn diamond they have guides but not storyline giveawaysWhere can i get accessory items for my acessory case on pokemon diamond?I think at the berry shop... you trade berries for stuffWhere can i get accessory items for my acessory case on pokemon diamond?At the berry shop

In Veilstone (department store and massage lady)