Now you can add coffee stains to your LaTeX documents without wasting coffee:

Your readers will appreciate you saving them the effort. From the package documentation:

This package provides an essential feature to LATEX that has been missing for too long. It adds a coffee stain to your documents. A lot of time can be saved by printing stains directly on the page rather than adding it manually. You can choose from four different stain types:

1. 270◦ circle stain with two tiny splashes

2. 60◦ circle stain

3. two splashes with light colours

4. and a colourful twin splash.

Dunce Cap Doff: Jordi Soler.