This is a simple little micro at the entrance to Waveny Park in New Canaan.
When we first moved here, my wife and I took a bike ride to this park and stopped at the entrance. I had found a small Garfield pin along the ride and decided to place it amongst the rocks here. On subsequent visits to the park we have often stopped to see if Garfield was still there... he still is.
So I decided to give him a little more to guard than the entrance to the park. You're looking for a tiny container hidden along side a Garfield pin.
Note that this is a very public spot. You may need to "act casual" as cars enter and exit the park. Some people may not be comfortable with this. But I think this is what makes public caches so neat... the fact that so many people pass within feet of them everyday without knowing. Just try not to damage any plantings, flowers, etc. that may exist below the cache. :)
While you're here, be sure to check out Amalfi Adventure, which is also in Waveny Park.