My grandfather, Sid Riley, would draw designs on scraps of paper with colored pencils. It was all done free hand and with out any tools. They always reminded us of free handed Spyrographs. He would draw them on envelopes, Christmas cards, bills, anything he had a hand. Tom has one that is written on a back of a thank you note from one of the grandchildren.
I thought you'd might like to some of his handy work.