Parts from set 75978 (Diagon Alley)

[Philippe Hurbain]

Hi,

I'd like to build that set but some parts are not yet in LDraw:
35530 Minifig Head Special, Small Cube (Baby)
37704 Sports Quidditch Ball, Golden Snitch
43693 Minifig Head Special, Skull
49656pat0001 Geode / Rock with Glitter Trans Purple Crystal
60601pr0007 Glass for Window 1 x 2 x 2 Flat with Newspapers print

If anyone wants to work on these parts, your help is very welcomed
Thanks!

35530 should be easy, but I miss some reference material to get dimensions right.
49656 and 43693 are in Unity game, going to convert them!
No luck for Quidditch Ball...