Check out 3 Teacher Chicks: Singapore Math Tutorial Freebie. Even if you have not adopted this program, it provides students with an understanding of number sense and place value. I really like these laminated place value mats!
Score sheets, a deck of cards, and pencils are all that are needed for this fun decimal place value game! Perhaps a modified score card (with just thousands, hundreds, tens and ones) could be made for students that haven't learned decimals yet.