PC/HC plastic 35mm film canisters if pre-lubing, though I still have a few of the more ‘traditional’ aluminum ones. If one lubes their patch material as they load, getting grease on other stuff not an issue unless you are careless.
As long as you have a SHARP knife, trimming patches at the muzzle is very quick and easy. I have recently been experimenting with a couple of straight razors. Just have to work out a handle and sheath. If you can shave with it, it will breeze through any patch material easier than any shears I have used.