How can the flames be attached to Lord Biz' coffee mugs (as seen in The LEGO Movie)?
The flame shaft can be connected to plenty of parts, such as a "Round 1 x 1 with Open Stud".
However...the mug part has an unusual inner diameter that studs don't fit into. So I'm wondering how this was constructed for the film - or if the animators didn't actually make a construction but just placed the flames for the shot, is there some way they can be connected to at least approximate the way they appear in the film?
(I mean, without having to resort to... the Kragle!)