You can still find plenty of $1 slots without the video screens. Most bigger casinos have plenty of them. If you want smaller denominations the search becomes much harder.
4-Queens used to have some 5 cent wheels in a bank with a progressive...sometimes they use a car as the jackpot. Not sure if those are still there or not.
I would suggest searching some of the off-strip dives that have older inventory - like Poker Palace or Skyline Casino. I want to say Mermaids (downtown) has got some too - I know some of their machines dont have TITO yet, anyway.