Considering that I've spent plenty of time in Bangkok before, I didn't really feel the need to do a lot of touristy stuff. It was more about shopping and just wandering, and since Thai food is delicious, I took a cooking class at Silom Thai Cooking School!
We started off with a market tour, where our guide introduced all the different vegetables you might find in a Thai market. Living in Hanoi, I'd seen lots of these before, but there were a few new ones that I'd seen here and wanted to know about, so I think the guide was actually getting annoyed with me interrupting his lecture to ask questions!
We then went back to the cooking school itself, which consisted of just two rooms (for prep and eating!), a small kitchen with two sinks, and a balcony where we did the actual cooking. We were immediately put to work washing all the vegetables we'd bought.
Then Red Curry Chicken and Fried Fish Cakes (which I didn't take pictures of, apparently), and finished off with Steamed Banana in Coconut Milk.
In case you're wondering, yes, it did all taste as good as it looks! I left that place with a stuffed belly and a book of the recipes we'd cooked that day. Not bad for four hours of fun!