Honestly, the only really good place I've found so far is Kobey's Swap Meet, at the sports arena. I've never gone on Friday, so I'm not sure how busy/productive it will be, but I've gotten a lot of good finds on the weekends. The only other place I've found ponies at is a little thrift store in La Mesa, but only once. There's a thrift store on the same street as Kobey's, I've seen a mcdonald's pony there but nothing else. There's also a Salvation Army on that street too, but I never find anything and they don't seem to like to organize stuff at all. I'm not sure if there's anything in Chula Vista, I'm not familiar with that area.