If you'd like some outdoor fun, make a day trip to Mount Brandon. No easy stroll around the block, this hike is great for some mid-vacation exercise.
You'll have no end of sightseeing choices in Cloghane. Mount Brandon is a great place to kick off here, but there are lots of other interesting places to enjoy. Gallarus Oratory, Gallarus Castle, and Brandon Point are not far from the steep landmass and and will cap off your day nicely.