Tea Bag / Tea Infuser Coaster

Disclaimer:
Due to the recent incidents (things appearing on ebay) I just want to make something very clear:
I do not allow any commercial use of my STL-files, my designs and my photos!

Description:
On a stressfull office day I always enjoy a relaxing cup of tea. Or two. Or even more...
But I do not like the stains on my desk when tea is dripping from the bag. And as I re-use my tea bags up to three times I need a coaster to put my bag or infuser on.