Ah, I love to see pics like this, of how collections grow and the things that people add. I really like seeing other collections, too, because it's fun to think what ponies people have and what ponies they like best.
I found some old video a while ago of my sister and I a few weeks after our first ever carboot sale. We're explaining to the camera about our pony collection, and going through them all, saying what is what and where we got them and stuff. It's before we knew about US ponies. It was in 1995, so I'd have been 13 and my sister was 8. It's really nostalgic, looking back.
Congrats on amassing such a wide ranging collection in just a couple of years!