This one is such an easy block and a great place to start if you’re new to small piecing.

Cut 6 strips 1.5″ x 7″. Sew into 2 sets of 3 strips.
Press your seams in any direction!
Cut your strip sets into 3.5″ x 3.5″ blocks.
Arrange them as seen here.
Voilá! One fast and easy 6.5″ filler block.