Place value cups! Love this manipulative idea!
Grade NBT- Number and Operations in Base Ten Place Value Printables and Numbers in Base-Ten Second Grade This place value pack is a quick no-prep go-to
Saddle up for Second Grade: Place Value Toss
Counting with Place Value uses manipulatives with counting to develop a strong understanding of place value, as well as recognition of "how many" in sets of objects.
112 pages containing everything you need to teach place value!