Cloth particles: Seeking workflow I'm trying to make a stream of money (bills) flow into a toilet.

A metaphor for our times :/

I've created several low poly bills and grouped them for a particle system. I've created a particle system and have the bills streaming out. I can get the bills to collide with the toilet: some go in, some go out, that's fine. But the bills are stiff, do weird things when they collide with walls, and they all rotate/move from their object origin rather than collide with corners/edges of the bill. They stick in the floor upright from the origin: they rarely lie down :/

I don't know how to apply the cloth simulator to either the paper objects or the emitter.

File here: https://www.dropbox.com/s/sfr5pxfgn8uo681/toilet.7z?dl=0
With the cloth simulation, you want to select your dollar bill object and go to physics tab; it's in the Properties window under the Outliner by default, same window you go to for your particle systems. The icon is a bouncing ball. If you can't see it, over over the panel and scroll until it's in sight, or enlarge the window. Hit the cloth button. You're going to want to play around with the stiffness setting in particular. You don't want it to act like a dollar-printed hankie. Once you have setting to work with, you'll need to let it run it's simulation. You'll probably do this several times until you get something you like. After you're finally satisfied, bake all your dynamics.

Go back to your particle system; make sure you have gravity on. Mess with the weight values; your money could just be too light. Finally, apply the bill's orientation so that the origin is in the middle of the bill, and it lays flat on the floor by default. That part should help with the standing problem, at least.