Well, there is always stationary and wild abuse at least.I don't actually own a copy of B/W, just black 2.... I bought the game before I decided to get back into RNG abuse and after I changed my mind about gen 5 (Curse you Trubbish and Vanniluxe!)
Alliteratively, if you have other gen 4 games, ideally HG/SS, you can RNG breed on those. If you can RNG shiny pokemon, doing IVs is pretty much the same thing, just with an NPC that will troll you every once in awhile. It is also possible on D/P/Pt. just a lot harder.