For the second task in Harry Potter and the Goblet of Fire, Daniel Radcliffe wore tights over hands and arms so it would look as if he had webbings.

The filming of the last two movies (Harry Potter and the Deathly Hallows Part 1 and 2) took 236 days and after the last scene, when David Yates called "Cut!", Daniel Radcliffe, Emma Watson and Rupert Grint burst into tears.