What about the guys? I can imagine Kurt being into Bionicles while Piotr being really into model painting.
Hard mode: What would Xavier be into?
In Evo Kurt likes movies, video games, and Soccer(They are in the US. Nobody jump at the name). He also sword fights.
Piotr likes gardening and painting if I remember right. So yeah, maybe model painting.
Outside of creeping in people's heads, the only hobby I can think of for professor X is playing chess or other strategy games.
Y'know, Dawn of War 40k came out 2004 so that's a good common point. Laura might like violent games, Kurt likes video games, Xavier likes strategy games, outside of dancing Kitty likes tech so probably video games.