Share 'You Make the Set 6'

So, what's the plan for this.  I'll either clear out Multiverse or add multiple set capability to it in the next few days. But let's do some predesign(tm).  What's the plan for this set? What's the theme? Update: Multiverse now has the Wedges set in it.  Please do contribute - all are welcome to add cards or just comment on cards created by others!