In an old shelf behind some bottles we had not used for sometime, I found this wasp nest with some ten holes. A potter wasp had found a nice place for nesting! When I found out, the nest had served its purpose and it was empty. So I carefully removed it for examining. 
The shelf was out of doors in a passage and insects like the wasp had access. I had kept the nest on my desk and at the same time, I had found 2 or 3 parrot feathers that had fallen below a tree at my workplace scooter shelters. I had brought the feathers home and found the holes of this 'work of clay' a nice place to keep them. When there was a light breeze the feathers would sway and it was an enjoyable sight. In about 15-18 months, I had found more feathers and you can see them all here, the holes filled up and made a nice vase!! 
The nest was something like this. Pictured on the left is a different nest.
