What supplies did pioneers need?

I assume you mean the American pioneers of the west?

They typically brought food, clothing, tools that they would need to farm and hunt, animals and livestock such as horses, cows, pigs, and chickens. The pioneers also took other necessities of western life such as firearms, animal food and a bible (Depending on whether or not they were Cristian.). Children often brought a doll or a toy train to play with during the travel to their new life.