I led an Adventure in Science (AIS) class at NIH on genotypes and phenotypes. The participants got through the first weaving of a closed basket (genotype = undp), but didn't have time to weave the genotypes they had evolved on their own.
A summary of the instructions for weaving twogs together and interpreting the genotypes is here. More on evolving your own genotypes is here. Finish the weaving and discover what phenotype you have evolved!