Make his fantasy-themed fantasy come to life.
Who needs a skimpy nurse's outfit to heat things up in the boudoir when you can stay warm and sexy in a Harry Potter-themed robe?
To get Sheldon's heart racing faster than a Nimbus 2000, in "The Birthday Synchronicity" (Episode 11, Season 10), Amy burst into the bedroom wearing nothing but her finest Hufflepuff threads—okay, she was wearing pajamas, too—before she handed her beau his very own Gryffindor cloak.
Two wizards from different houses getting steamy in their bedroom? Now, that's what they call "mischief managed!"