30 unique picture bingo cards to accompany my solar system vocabulary list. Each page of the document features 2 bingo cards. I like to print them on card-stock and then laminate them for durability.
I use Popsicle sticks to randomly call out words for the game. I sometimes use bingo as another form of assessment; if you don't know the vocabulary words then you have no chance of winning (which usually involves getting a piece of candy)!