I once saw a spider with long legs in a web by my bathroom sink. I flicked a bit of water at him and a drop of water stuck to his body and covered it. He quickly climbed down the web to the counter (only 6 inches or so) and crouched down to briefly touch his body to the dry countertop. That removed the drop of water from his body, and then he climbed back up.
Aside from that, I sometimes like to toss foreign objects in spider webs. For example, I'll toss a piece of a leaf into a web. The spider will quickly come over, work some magic for a few seconds, and then the leaf is suddenly untangled and floats away. It's really interesting to see how quickly they're able to remove unwanted objects from their webs to keep them clean.
Aside from that, I sometimes like to toss foreign objects in spider webs. For example, I'll toss a piece of a leaf into a web. The spider will quickly come over, work some magic for a few seconds, and then the leaf is suddenly untangled and floats away. It's really interesting to see how quickly they're able to remove unwanted objects from their webs to keep them clean.