Okay, so I'm late the party and still quite new here, so perhaps if nothing else I can offer fresh eyes ... and perhaps a new notion that isn't totally lame.
Even though I've been playing in the dirt for a while, every time I arrive to a new house (which happens about every 10-12 years or so), I feel like I'm on, yet once again, a steep learning curve. Consequently, it occurred to me if there were a badge for which I am most suited it would be the "steep learning curve." I'm not sure how to do a badge that would work, but I did play with a design.
Another notion I had is one for those of us who find it difficult to drive by a good nursery. Every year it seems (I've only seen three springs in this new place and the gardens all need serious attention), I'm regularly buying a couple of carloads of new plants. Truth be told, I was doing that in my last place too, even into the 12th year there. Perhaps a plant shoppers badge might prove popular. I'm thinking something on the lines of a car that is basically overloaded with new purchases, or an individual swamped by armloads of new finds, or just a big ol' plant wagon filled to capacity.
Hope all is well with you and yours.