That is, several ideas that don't really fit together, but all have roots in one Fandom or another...
1) We have Oats. We have several kinds of Fruits... We need a recipe for Fruity-Oaty Bars, that when eaten grant the, "Man Out Of A Mouse," feeling. Have it require 15 ingredients, only stacks in 12.
2) A 5003 Loam badge, much like the Saint Peater badge for Peat -- Only The Loamly
3) We have Potions from the Cauldron and Potionmaking, how about Spells from the Wand and Wandery? Make a Wand out of 1 Plank, 1 Basic Crystal, 1 Sparkle Powder, 1 Rainbow Juice, 1 Essence of Purple, 1 Essence of Yellow Crumb, 1 Essence of Silvertongue and Tinkering 3 or 4. Spells require a Wand and 1 Paper (which becomes the inventory placeholder for the Spell) plus the ingredients to make one. Ideas for Spells are many and varied, able to copy most effects already in the game (which is why it takes so much to make a Wand) to ideas like one to make yourself invisible while In The World. To learn Wandery, you need to have learned Crystallography I, Potionmaking I, and Meditative Arts II.
There are more ideas, but that's more than enough to discuss in one post!