This winter camp I went all out with my 5th and 6th grade students. We baked cookies!
I was quite lucky in that we managed to pull a few strings to buy an oven (for around 150,000W) on the English budget (I think it's shared with the Daycare centre which has a huge budget due to unnecessary government support). Once we had an oven the rest was quite easy. Just had to be very strict with the students, to the point that if they step out of line, they have no cookie. I didn't want floury clothes... And so even the more difficult students followed the rules very well.
Ingredients are pretty cheap (we managed to get them on the camp budget too), cookies are very simple to make, and it took up almost 2 hours without cleaning time. I baked them in the afternoon by myself, they only made the dough and prepared it.
This was really great since Koreans don't have a huge selection of baked goods, and it's something that I grew up with and can share easily (now that we have an oven). I'm hoping this is something I can do regularly with some of the teachers! I think it'd be cool to have a cooking culture class.