Fisher developed the pen independent of the space programme, but after NASA tested it in space, the US space administration reportedly bought up around 400 pens to use on the Apollo missions.

Looking like an ordinary retractable pen, the Quillit 3 in 1 Stylus Pen lets users deploy the right nib for resistive or capacitive touchscreens and also acts as a traditional ballpoint pen.

Take out the ballpoint ink cartridge from its plastic case, or as it is called a barrel, picture 5. Paste glue on the feather and put the ink cartridge in the middle, and paste the other feather ...