I volunteer with a pack of Brownies, and today we made cress heads with them. They loved it, and hopefully some of them will water them long enough for the cress to grow.
We made them by wrapping a strip of plain paper around the pot and decorating it with a face. The pots were stuffed with scrunched up paper, then kitchen roll. This was topped by cotton wool and watered. And finally, the seeds were sprinkled on top.