L.T.
I just recently took my boys to Market Street in The Woodlands. There is a FREE trolley that rides around Market Street, the mall and a couple of other places. There is also a nice park next to the library called Towne Green it has a path on the right side that has large story books that you can read to your child. There is also a water taxi that goes along the river walk (you can catch along the river walk, but the best place is to pick it up at the mall in the outdoor mall part between PF Changs and Rockfish). It costs $5 for adults and is free for children under 2 (it is an all day pass). Whatever you end up doing have fun!
L.