I'll shoot ya a PM and offer a dinner at one of the downtown Fort Collins places.
What to do - cycle up the St. Vrain Canyon (west southwest from Lyons CO) as that's perhaps my favorite canyon road in the area.
Go for a ride up CO-14, take a left at Stove Prarie and stay on the road and you'll end up on Harmony Road in western Fort Collins.
Take a Centennial Road drive - it's the road at the eastern edge of the Horsetooth Reservoir.
Budweiser brewery (I-25 just north of Fort Collins) offers free tours or you can just stop in to see the horses - this facility is for training the young horses and IIRC a retirement spot for the old ones.
In Greeley there is a GREAT model train layout downtown, if you're into model trains or just wish to blow some time. Entrance fee of $6, Hours: Friday & Saturdays: 10 AM - 4 PM, Sunday: 1 PM - 4 PM Greeley Freight Station Museum
Downtown Loveland has a western museum & gallery (NWC or Lincoln/287 & 5th).
Drive up to Estes Park on US-34 but take the "right fork" at Drake and route through Glen Haven. The bonus is going up a narrow canyon between Glen Haven and Estes you pop over a ridge with a FANTASTIC view of the mountains beyond Estes Park.