One thing I implement in my room is the "60 second clean up". It is the easiest, fastest way I know to get the room spic and span. Here is how it goes.
I count down aloud from 60 to 0. During that time, the students are moving around the room, some with brooms, some without, picking up any mess that they made. Pencil shavings are swept. Pieces of paper are picked up. Anything that has been dropped is removed from the floor.
By the time I get to 10, the students begin heading back to their seats. When I reach 0, they are all sitting with their hands folded.
There are only two rules: Everyone helps. No talking.
It is quick and simple and painless. My room is clean and we have a place to function that we can be proud of.
How do you get your students to keep their areas and the common class space clean?