Hi! There are some fun ideas here: https://homebnc.com/best-farmhouse-style-tray-decor-ideas/
Laura: here are some fun ideas!
I would try stenciling it!
Perhaps adding some writing or decoration using cut vinyl?
You could use removable vinyl if you have a Cricut or Silhouette cutting machine. Add different text or graphics and change them out for seasons or events. Also chalkboard paint is fun. Then use chalkboard markers to add designs. If you paint it with the chalkboard paint it would not be food safe. Good luck!