how do you get this item- Lucky Dip. id really want someone to tell me

Lucky Dips, from what I remember, were not items. A "lucky dip" was actually an "item vender" where you send in one dollar to get a random item. I'm not sure if they still have this somewhere in the shop or not. I think it was removed.

There might be a collectors item called "Lucky Dip" too. If there is, and I have no idea if there is or not, you will just have to purchase it from the owner. Just like any other rare item.

There is an item called Lucky Dip, one of them is in my possession. But yeah, they're one of the oldschool items, not available anymore.