Growing grass using tights and sawdust
Give each beaver scout the leg of a pair of tights and some grass seed which they add to the toe of their tights. They then fill the tights leg with sawdust until it is the size of a tennis ball. Tie off the leg and the rest of the leg cut off. The grass head should then be put into a yogurt pot, toe upwards and watered. They can take them home and keep them watered watching the grass grow.
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