The tumbler pattern was orig. used as a scrap or charm quilt pattern. Most were ordinary utility type quilts. So scrappy comes to mind first. The more fabrics the merrier. If one fabric tends to jump out at you, give it company. This can be due to color, intensity or type/scale of the print of the fabric. Scatter the "company" around in the quilt. This allows your eye to be pulled around the quilt.
These tips are really from my Grandmother.