Lemons and Limes
If you are going to use them within a week, store lemons in your fruit bowl. If you want to keep them for longer, store them loose in the fridge.
If you have an abundance of lemons, freeze the excess. You can freeze them whole, which means you can grate them for zest when needed and then return them to the freezer.
You can also juice them and freeze the juice in an ice cube tray.