They were being done by guys, the known ones, the scions generally keep up on these. The Baker Street Irregulars keep track of their chapters (scions). There was a husband and wife duo that create tree ornaments based on objects in the Canon (persian slipper, dispatch box) and I've heard of dressed dinners.

The LOTR in peeps was being done by guys along with their girlfriends (people were commenting about so geeky, you can't get a girl).