Been toying further with the 'bot idea. Have sketched some pics straight onto cards with a biro - so the underlying guidelines can be seen. Am liking the fact that this retains the original spontaneity. I'm envisaging selling them for around $2 ('double dollar doodles'!) - without envelopes as this would eat into the already slim profit margin (after listing fees and 'free' postage). I'm thinking that the giver/recipient could add other details or colour as they think fit. Again, any feedback on the notion would be gratefully received.