Both Dreamers and Le Rouge have the same discount racks of $1.99 thongs and $2.99 panties. You probably know that those two stores are next to each other on I-35 about 35th St., as well as a Dreamers store on N. Lamar not far south of Braker.
Popping a thong string or ripping panties, either you or her, is as much fun as popping a pinata. Also, it brings out my inner caveman.
Cheap heels -- maybe Payless? Fallas Fashions or Melrose in Capital Plaza on I-35 at 51st, the Target Center? You probably don't want to parade her around in such shoes, the heels might fall off, but for inside play, I'll bet you can find something for twenty bucks or so.
Agreed about Yandy, prompt service with good prices. And don't forget about good ol' Fredericks of Hollywood; no physical stores any more, but they deliver within a couple of days.