My favourite makes are always those little bursts of inspiration born out of necessity. At the shop recently, in a 30's dress shirt, minus cufflinks I had to think of something to stop the coal dust messing up my shirt cuffs. To hand I had some vintage buttons and a ball of string. This is how to make some vintage cufflinks...
4 buttons (2 of which fit through your button holes
1. cut a length if string about 6" long
2. take a button, thread the string through keeping a good length in hand
3. thread the long end through another button
4. tie in a reef knot so buttons are around 1/2" apart, trim ends
5. make another one