I feed some in cages and some in bins. Tiny little babies I tend to put in bins mostly so I can make sure they ate it. Pink mice and rats tend to blend in well with the cypress.
Feeding anything arboreal outside the cage is just insane. Good luck with that one.
Feeding giants outside the cage is a good way to get dead. Same with some hots.
Now and then over the years when I've had snakes sharing a cage for whatever reason...usually breeding but sometimes I just like to be a rebel and break a rule ok?

gotta separate to feed them. It's a good idea to keep them separated for a day or two after they eat...lots of babies get cannibalized shortly after being reunited with cage mate/litter mates right after a meal. It's a better idea of course to separate them entirely but what we preach and what we do or follow varies sometimes if even just temporarily so I think a mention of this scenario is important.
oops edited to add something I forgot...
Ever dissect a snake or lizard? I have. They don't have a twisty intestine like we do. It's a straight shot from mouth to butt and the stomach is basically just a slight wide spot on the way down. It's really hard for them not to be able to pass anything they take down. Watching the teeth and gums to make sure no wood chips get stuck is way more important. Wood particles kept damp with saliva rot. Rotten wood makes mucho bacteria. This is a major cause of mouthrot (stomatitis)