I can't help with the gifs, although I did enjoy looking through the ones already posted.

Shoes:

onlineshoes.com
dsw.com

These are mainstream, but you'll be able to find sensibly priced stuff. I noticed you had ballet flats before. Born shoes can be a little dowdy, but they are really comfortable and durable, and they do have the odd cute pair. Sofft are one of my favourites, but I only own their heels.

I'm not as good a source as Bina!