You will need a 1.5l drinks bottle.
To serve, I like to dilute half-and-half with water. This also allows those who like their lemonade fizzy to dilute with fizzy water.
You don't need anything special to juice the lemons: a serrated knife and a pair of clean hands will do fine. However, I would suggest juicing each lemon half into a bowl, removing the seeds, then pouring the de-seeded juice into a jug. The alternative is to use a sieve, which also removes all the nice fleshy bits.
This recipe is not copied from a book, and is given freely in the hope of sharing pleasure.