For me, it was just a lucky event:
For my classes I am making a lot of wooden models of mathematical objects; between them there are some devices to draw algebraic curves; so I was thinking about the SPHIROGRAPH, which is a toy to make wonderful drawings putting a pen in a hole in a wheel rolling over another wheel...
I understand that you all are thinking "what can be the link to AWAD??"
Well, searching in the Web for "spirograph", I found a virtual copy of it... in Anu's page!