I always find cruising the resorts as a cheap and easy way to spend some time. I would take bus to MK(not go inside) and than take Monorail around to all the resorts. Get off at Poly and cruise along the beach and than walk over to GF. Enjoy checking out there and than take Monorail to Contemporary. You can than take boat over to WL and check it out there. When done can head back to Contemp and ride Monrail to EPCOT. From there can take bus back to resort.
Mini Golf is always a fun thing to do as well. If water person, can always check out different pools at each resort.