I have too much milk- how do you suggest I use it up?

Basically my mum overstocked me with milk, and I am not a huge milk-drinking-eater. I plan to freeze one of the cartons, but 2L of milk is still quite a lot for me to consume on my own before it expires.

If anyone has a recipe for a chocolate milkshake which uses cocoa powder that will be awesome. Any other recipes are recommended, and completely new ones the better.

I don’t want to have tonnes of cereal to use it up, and I don’t really like drinking milk on it’s own.

I also hope that I can use some of these recipes in the future as I hardly have milk in my diet and probably should.