Anyone include an accessory-only day in their split?

Right now I run a PPLRPPLR 8-day split (so each workout falls on a different day each week, but cycles around). I usually do 18-ish sets, 6-9 of compounds and the rest being accessories. I was thinking about replacing one of the rest days with a light accessory-only day to add some more volume for small, fast recovering muscles like rear delts or calves. Anyone do something similar?