If you have a couple of hours to spare today and you don't know what to do, but have some fabric lying around (1m by 90cm), try to make something for yourself. An idea? Check out this vintage pattern from the late '50s showing a collar with a knot and matching cuffs.
The best results will be obtained with a cotton fabric: the pattern makers suggested a gingham fabric, but the pieces shown (by the way, the pattern is in Italian, remember that collo = collar; nodo = bow; polso = cuff; passante =loop) are versatile and quick to make and could be reproduced in a variety of materials (even in plastic, maybe using a piece of a see-through shower curtain). Enjoy!