A nonconductive stubby wrench with 1/2 and 9/16 inch sockets. The bottom has slots to use in tightening wing nuts. I use this when working with deep-discharge marine batteries and deep discharge golf cart batteries.
This is functional if printed in ABS and used in situations where something needs to be more than hand-tight, but less than truly tight. Frankly, printed plastic wrenches are wonderful novelties but much too soft to be "real" general purpose wrenches. IMHO, printed socket wrenches come closer to functionality than printed box-end wrenches. Someday I will try machining some nonconductive tools in Delrin rather than printing them, and suspect that will be a huge improvement.