I don't normally condone 6:5 blackjack, but both Luxor and NYNY have at least 1 $5 table 24/7. Also, Tropicana daytime during the week usually has at least 1 $5 table. If you do go to Luxor and/or Tropicana, ask about their WIN Cards at the player's club. These are a nice way to help extend your gambling budget a little bit. For more info, check out the website: http://www.wincards.com
Outside of that, as darren mentioned above, there is a plethora of $10 3:2 tables with decent rules all over the south strip properties (Luxor, Tropicana, MGM, NYNY, Monte Carlo, Excalibur). Just be sure to ask before sitting down what the blackjack payout is, as they sometimes have 6:5 tables as well.