Yes,
once i asked same question on the forum and the generalized reply was that the discussion could be of help to others -
in fact if the original PO doen't offend, and ina lighter mood, the reply could be 'human brain'
if he could handle and it serves his purpose, ATMEL ATTINY11, 12, seiries appear smallest- with only 8 pins(sop8)
Many times one need not purchase them, as these are found on the back of inkjet catridges and used for character counting and later say --'ink exhauted'
even if one loads ink, it wouldn't work unless the micro is reset.
Later INK Catridge restters have appeared.