Book a bike ride through the country side, very interesting and enjoyable, though if you haven't been on a bike for a few years it can get a bit hard on the backside, I did a 40 km ride with a mate, had a guide and a mini bus that follows so that if you get tired of pedalling you can ride in the bus. The sights and the people you meet outside of Bangkok make it one of the most memorable experiences I have had in my travels. Price also included, pick up and drop off at hotel, snacks and lunch. You could stop any point on the way. there are various length trips that you can do. Another thing we did was catch the local "ferry" that goes down the canal/river this was a great experience as well and a cheap way to get around. Shop at Pratunam markets and the Indra arcade your daughter will love it, Enjoy your holiday as Bangkok is a very exciting and interesting place.