You can utilize something as simple as a brown grocery bag for feeding your rosy outside of its habitat. I usually use plastic terrariums which I use for transport or a small tupperware container if my wife isn't around.

It can be easy to forget that you took out the snake for feeding- so a container with a lid is good... or some other reminder--- string around finger etc! I usually wait for them to finish and then gently get them back into their racks... don't want to make them regurgitate

Rich