I used a sample collection of fabrics to make this Quilts for Kids quilt. The sample pieces come in various sizes so sometimes it's difficult to figure out how to best use all the fabric.
I started by cutting the longer strips from the bigger sample pieces and worked my way down to the smaller pieces. But there's a point where I have to make certain I have enough to get a 4.5" x 4.5" square for each of the blocks.
It was challenging but I managed to use up all of the sample pieces pretty efficiently. It is a very pretty fabric collection and was fun to make the pieces work.