We love Farrington Lake. I took the family fishing at the Lake earlier this summer, and I've never seen anyone catch much, but the kids saw a few people out kayaking on the lake with their fishing poles and they wanted to try it. A couple months later and we take kayaks with us to camp most weekends in the summer.
The area also has several good caches. I'm amazed that places like this exist just a couple miles from Route 1, the Turnpike, and a lot more.
This is near a very nice spillway and some trails. The best way to find this cache is to head towards the spillway entrance and take the trail downhill off to the left, before heading off the trail to make the grab. You'll have a great view of the spillway in a surprisingly secluded place. If you're in a rush or if that isn't your speed, you can also walk back the way you drove in on the gravel parking lot, and head east just before the fenced off area with the natural gas pipeline.
The sign at the entrance to the parking lot says it's open from dawn to dusk, but I don't think that's strictly enforced.
I take the kids with me to cache a lot, and they are much more into trading swag, so this one is loaded up with some good toys. Feel free to message me if it needs to be restocked. There's a wooden coin for the FTF. I also dropped a TB in the plastic bag with the log to make sure it doesn't get lost with some of the toys, so don't feel obligated to take it.
Enjoy!