I build a bunch of mushroom planters using Wormwood or Woodie (for the living log income) and fill them with red mushrooms or spores. They have a lot more use imo than green or blue mushrooms.
In addition to being crockpot filler like other mushrooms you can:
-Leave a few laying around berry farms to attract and kill gobblers
-4 monster meats+27 red caps= 27 manure, 2 meat, and 1 pigskin
-Wormwood can eat them without penalty
-drop a few large stacks to get rid of Bearger (I prefer to drop them to clean up bearger after deerclops fight)
-fed to anything in your inventory to "murder" them without naughtiness (like if you don't want to attract Krampus while saving for your gossamer saddle)
-If you don't find a use for them before they expire, well you can still use them for rot or ash