I would suggest a drive down the Seward Highway - along Turnagain Arm, Girdwood, the Winner Creek hand tram near Girdwood, the Wildlife Conservation Center if it is open, Byron Glacier hike/walk. Maybe even take the tunnel to Whittier. They have a good museum in Whittier and great views. But the tunnel is only open once an hour in each direction.
You can also drive up to Glen Alps (the mountains east of Anchorage) for great views and some hiking trails.