Depending on what things you will have already done on your trip (and the ages of the people in your group and what your budget allows) you might:
1) hang around your resort (free--well, no additional cost, you've already paid)
2) Downtown Disney (free--if you're just looking)
3) morning at one of the water parks ($, unless you have a UPH or plus options left on your PHP tickets)
4) ride the monorail (if you haven't looked at any other resorts, ride the resort loop and get off at the different resorts and look around) (free)
5) do a character breakfast at one of the resorts ($) -- or if you have a UPH, you could do a character breakfast at one of the parks and it wouldn't cost you park admission in addition to the cost of the meal
6) go to Fort Wilderness campground: animal petting farm, horse stables, blacksmith, ride ponies/horses, walking trail (free)
As with most things Disney, there are more choices of things to do than time to get them done.