We have all been couped up quite a bit for the last couple months, and even tho its not quite time for spring cleaning - its good to just do a quick dust/wipe of your corners and crown moldings. Cobwebs form more readily when homes are closed up and air movement is slow. They're also almost impossible to see unless the light hits them just right or when guests arrive.
This is one of the best uses for those long handled swiffery dusters things. But if you don't have one, no worries. Simply take a dishrag and wrap it around a broom or other long handled tool. Then just whisk it around the top of the room. Do a quick sweep of hanging lamps and fans at this time too.