Warhammer 40K
I only recently got back into Warhammer 40K, but in the last 15 or so months I've built up quite a collection.

These are the different sections:

Tyranids - My tyranid collection. Being my main army they have the most attention.
Sisters - Sisters of Battle. Rumours are they're getting an update soon. I'll be starting a collection then.

I'm considering starting a fantasy army and a lord of the rings army... but money is a concern in this hobby.