Cube = money

I dreamed last night that we were in California or somesuch on a vacation, and we were in a store with all kinds of toys and models. They had Rubik's Cubes with different stuff on the cubes, and if you put it together the right way, you could win $300. I told Robyn that we should get one of these for Joe, so he could make some cash.

Need dream interpretation. What's it mean when you dream about Rubik's Cubes?