Walk along the beach or rent a kayak or standup paddle board and head out onto the lake!
Lots of options here: take a hike along the lake, enjoy the beach, bike down the path to Breckenridge, try out the dirt bike course, or play a round of disc golf.
Walk down the historic main street, hike one of the many wonderful trails in the area (including a 14er), tour a distillery, pan for gold, or kick up the adventure with some mountain biking
Cozy German beer garden we visit all the time after skiing. Great beer, brats, and atmosphere!