Andrea M. Heald
Crochet
I am an avid crocheter, and enjoy combining it with my mathematical interests. The picture is of a trivet made with cotton thread. Notice that the first two rings in the pattern are solid, while the next has 2 segments, the fourth has 3, the fifth has 5 and following the Fibonacci sequence until the 12th ring which has 144 segments.
I have exhibited pieces at the Joint Math Meetings multiple times: