I am kitting up a project to take to finish on retreat later in the year and made a test block. The centres are constructed from four identical fussy cut squares. I realise I need to have a longer lead in to plan quilts and take the time to source suitable fabrics and enough of them. As it is this is marked by a series of compromises starting with realising this lovely Philip Jacobs' fabric only has a 12" not 24" repeat. And I cut out enough for 20 blocks when I only need 16, 4 by 4 15" with sashing and borders.
Here is another 4 patch: