We were told to gather 25 buttons. Two colours. Different shades. And put them to one side. These were later combined with some randomly selected photos. Once this was done we were "allowed" to pick some matching patterned paper and other matching embellishments.
...and that was the foundation for one of the layout classes for A Bakers Dozen (BPS class by Darci Dowdle). I didn't quite end up using all the 25 buttons, and I exchanged a few of them for jewels... And my end result is rather different from the suggested layout design too LOL!