Ancillary Variety

i am having difficulty coming up with the same sort of variety for abs, forearms, calves, as i do other body parts and i was just wondering if it is even neccessary to use the same variety. i always do the traditional workout schemes though i do try to vary reps and sets. i never really do strip sets, wave loading, back-off sets, etc. and was just curious if this is how most of you guys do it too. i’m not trying to prioritize the little body parts, but i don’t want to neglect them either. so is it necessary to use a lot of variety and can you go longer without your workouts getting stale for ancillary parts or should i be switching it up every couple of weeks and using more advance methods?