Project: Gorgon is a 3D fantasy MMORPG (massively-multiplayer online role-playing game) that features an immersive experience that allows the player to forge their own path through exploration and discovery. We won't be guiding you through a world on rails, and as a result there are many hidden secrets awaiting discovery. Project: Gorgon also features an ambitious skill based leveling system that bucks the current trend of pre-determined classes, thus allowing the player to combine skills in order to create a truly unique playing experience.
The Project: Gorgon development team is led by industry veteran Eric Heimburg. Eric has over a decade of experience working as a Senior and Lead Engineer, Developer, Designer and Producer on successful games such as Asheron’s Call 1 and 2, Star Trek Online and other successful Massively Multiplayer Online Games.
Basic idea: a utility belt with a required Gardening level that gives additional sidebar slots.
Belt of the Master Gardener
Requires Gardening level 50
+5 sidebar slots
I think this would need to be balanced by some kind of additional mod that either prevents it from being used in combat, or a sufficiently negative mod that all but guarantees it won't be used in combat like a "+50% damage from all sources" mod.
This could fit into the set of class-specific belt Toolcrafting recipes.