We did a bunch of recording with a guy in a greenscreen doing all sort of things related to cleaning and we need him removed and make it look like the things he is holding in his hands, is flying in the air.
Here is what we have recorded for that purpose and what you will find in the Premiere work file:
1) The background shot to fill out the hole when he is removed
2) The shot with the guy in the greenscreen suite
3) The 'tools' he have in his hand; a broom, a wacum cleaner, window cleaner elements etc. In very short sequences his fingers, hands, body, head will go in front of the element and there you will need the original element to fill out the hole. That is what those extra clips with people holding the elements in their hands is for.
It is very important that he is totally removed and you just see the object hanging in the air.
You might have to do the keying over several times and maybe even use rotoscoping at places where the green color is to close to the surroundings colors. It is very important that it looks like the things are hanging in free air.