We, the Harvey Core Team, have been doing something very similar to Google Doodles. A common thing we do is to put on hats to Harvey like we did for @keef's birthday
or the St. Patrick's day one
You can submit your ideas via a pull request to this repo. Please have your submissions follow this naming convention:
<PUBLICATION_MONTH>/<PUBLICATION_DAY>-harvey-<DAY_NAME>.ext
For instance St. Patrick's day march 17 becomes 03/17-harvey-st-patrick.png or may the forth for Star Wars day would be 05/04-harvey-star-wars.png.
The image dimensions are relatively flexible, but 350x330px makes for a sensible default.
We will only accept geeky and/or goofy doodles related to Harvey. Stay clear off religious and national holidays.