How would you use a lot of lemons? We've got a lemon tree and an overabundance of lemons at the moment. Aside from lemonade, what should I do with them?
Well there are a myriad of nice lemon recipes of course.  A decent lemon drizzle cake usually goes down well.

However, if you really have a glut, consider making a batch or two of lemon curd, or even preserving/pickling them like the North Africans do.