Lindsay and the kids went to the Farm for a few days to visit Laura, Ian, Helen, Vera and Faye and one of the activities was to puff rice with a puffer that came from my Grandfather. It looked fun, sorry I missed it.
[Now updated with footage from Ian.]
http://photos.dspencer.net/Videos/Features/10646206_8nNRM#1350937654_8TPfZjH-A-LB