In 1998, Nina Katchadourian went about repairing broken spiderwebs.
Let that sink in. She mended spiderwebs!
“The morning after the first patch job, I discovered a pile of red threads lying on the ground below the web. At first I assumed the wind had blown them out; on closer inspection it became clear that the spider had repaired the web to perfect condition using its own methods, throwing the threads out in the process. My repairs were always rejected by the spider and discarded, usually during the course of the night, even in webs which looked abandoned.”
More pics and more details at Nina’s site. She has a whole series called, “Uninvited collaborations with nature”.