Garbage Bowls--whenever the class is doing a cutting activity, put a "garbage bowl" on the table.it collects paper scraps, eliminates paper on the floor, and keeps kiddos in their seats! Dollar store garbage cans?
Homework club- If they turn all their homework in on time, then they get to stay in the club! If they don't then they are out of the club. Students who turn all their homework in for the entire month get to come to the monthly homework club lunch.
Make a ring of sites kids can visit. The name of the site, URL, and a logo picture go on the front, what you can do there (and any necessary passwords) go on the back. Maybe put a QR code instead of a logo?