Most bindings are cut at 2 1/4" but I like the totally machine applied method, so I cut my bindings at 2 1/2". This way the leftover bits can easily be cut to 2 1/2" squares to use for 4 patch blocks. Lately, however, I've been cutting my leftover bindings to "chips" of 2 1/2" x 4 1/2" to use in "Potato Chip" blocks. These blocks are so much fun - no points to match - no worries about colors, etc.
Start with two pieces sewn along the long edges, then add a single piece along the sides of the first pair. Additional chips are added by sewing along the short edges. Before you know it, the block is done! They are also fun to make in batches of 2 - 4 at a time, chain piecing at random.
Of course, others will want more control, such as neutral centers with dark outer borders, or dark centers with lighter outer borders. Both of these can be used alternately for variety with dimension. You can stop at 8" blocks:
Or maybe you just want to empty your autumn stash?