Eastside had coin droppers in an alcove room on the west (Bounder Highway) side of their casino six months or so ago--they might have been VP however, as I think about it. California had coin-droppers Downtown just a month ago, off the front door near Main Street. But they are certainly getting rare.
Slots Of Fun has some of their inventory on TITO but some is still coin based...
And then if you go to the dives you can find tons of coin machines: Poker Palace, Silver Nugget, Klondike on Sunset,...I want to say some Water St casinos in Henderson have them too but I might be wrong.
California Hotel has the original coin in/out machines. On their 25 cents VP machines on the second floor, you cannot use bills. You must hand feed the coins and the wins automatically drop in the tray. I believe the dollar coin machines are still there next to the elevators at the check-in area.
The other hotels do have coin in machines, but you can also use bills. The wins accumulate until you cash out.
I still miss the sound of coins falling and carrying those coins around in a bucket. I also miss the old neon buzz. My understanding is they changed to paper was to foil the cheats. Vegas lost millions to the cheats that had these little homemade lights almost like a laser that they would stick up the payout chute. The small light would confuse the payout tumblers and the machine would pay more money. (that's the idea of sorts) Coming up with the paper payout has stopped this kind of cheating.
Thanks everyone for the answers. I leave for Vegas in a few hours and it looks like I will have to travel to the Downtown casinos to get the vintage Vegas coin experience.
When I have to pump in a stack of coins, it seems to end up costing me less losses than just slipping a $20 bill into a slot. Plus I love the real noise of coins hitting a pan versus the synthetic sound the tito machines make.