There are trivial offices people might compare to “dogcatcher.”

Township Auditors and Tax Collectors often have the duty of simply signing a piece of paper, so that a professional firm may do the auditing or tax collecting.

The OP is correct that it is worthwhile to oppose folks running for those offices (the first job is to recruit a better candidate, or to step forward yourself). These offices can be stepping stones to “policy offices.”

Also consider school board races. Alice or Bob might be active in the PTA, but if they're going to ban books about reproductive health…