Cut an assortment of fabric scraps into narrow rectangles with the long sides measuring 7cm. Arrange on a flat surface to check the mix of colours. Sew pairs of fabric strips, right sides together, to build one length measuring 23cm long. Press all the seams in one direction. Fuse the fabric strip to the interfacing, then topstitch each of the individual seam lines.

Using a small running stitch, sew a wavy line down the centre of the multicoloured strip with the first colour of embroidery thread. Change colour and stitch a second, parallel line, leaving a gap of 3mm. Add more wavy lines in this way to fill the width of the strip. Fold in and tack 5mm around the edges of the strip.

Cut a 5cm x 21cm piece of felt and pin to the back of the strap. Oversew the felt to the folded sides of the cuff to cover the raw edges. Stitch two pairs of snap fasteners to the ends of the cuff, giving an overlap of 1cm.