Your fire truck fabric is darling and perfect for my default baby quilt pattern. Pick a main focus fabric and cut 6 1/2" squares, then pick a couple of coordinates and make either 4-patches or pinwheels. I do a 5x5 grid or 5x7 grid, then do a narrow inner border with a coordinate, then outer borders with the focus fabric. Quick and easy.
I'm binding two at the moment done 5x7 with the 4-patch variation. (My Stepdaughter and nephew's wife due a week apart! Eek!)