Here is "The List". I received some great ideas as you'll read below. I did edit them a bit, removing unsafe and illegal activities...there are jokers in every bunch (especially among friends and family). Many people submitted the same ideas and the most popular entries included running the river at ASCI and visiting Swallow Falls.
Take a Pleasant Valley Dream Rides hayride during fall foliage season.
Do the Deep Creek Dunk
Dogledding on Wheels at Husky Power Dogsledding
Stop for ice cream at the Lakeside Creamery
Raft the Upper Youghiogheny
Hike the Meadow Mountain Trail at Deep Creek Lake State Park
Cross Country Ski in New Germany State Park
Kayak in Savage River Reservoir
Raft the river at ASCI
Swim at Swallow Falls
Go to the Rodeo at the Fairgrounds
Visit the Deep Creek Lake Discovery Center
Attend the Deep Creek Lake Art & Wine Festival
Cross Country Ski on Deep Creek Lake when it is frozen solid.
Fly Fish on the Savage River
Go treasure hunting at local yard sales.
Go to Art in the Park
Eat at Englander's lunch counter.
Hike to Maryland's highest peak, Backbone Mountain
Complete the world's toughest triathlon - the SavageMan Triathlon
Visit Fairfax Stone, the source of the Potomac River
Visit the coal mining ghost towns of the Potomac
Water ski on Deep Creek Lake
Water ski on Deep Creek Lake when it is as smooth as glass
Have a drink on the Yacht Club deck at sunset.
Sail in a Flying Scot race.
Pick up some Blue Crab Nuts and Cheese at the Fireside Deli and go watch the sunset.
Eat Fried Ice Cream While Watching the Demolition Derby at the Garrett County Fair
Attend Autumn Glory
Spend an afternoon at the Honi on a hot summer Saturday with a designated driver.
Have dinner at Penn Alps on a cool autumn evening.
Visit the Casselman River Bridge and imagine the history that took place there.
Grab a Brenda's Pizza on the way into the lake.
Take a ride on the Mountain Coaster.
Whitewater the Upper Yough.
Attend an All Earth Eco Tour Bonfire
Visit Sugar and Spice Bakery on Saturday morning around 9am for a hot fresh donut - better than Krispy Kreme!
Go to Little Sandy's for breakfast.
Boat to the Fourth of July Fireworks in McHenry Cove.
Soar over Deep Creek Lake and other parts of Garrett County in a Cessna Airplane - operated by Maryland Mountain Aviation at the Garrett County Airport.
Stop and check out the view at the Cove overlook.
Visit Swallow Falls when it's frozen.
Go by boat to Arrowhead for breakfast.
Laser Tag at Smiley's on a rainy day or when you need a break from the sun.
Thanks again for the entries. I'll be posting this on its own page soon. Feel free to send more ideas over and I'll add them to the list.