If you don't yet have magnetic place value blocks I strongly suggest you put them on your wish list. I have found them to be a wonderful tool when teaching place value to my second graders. Once you have some you can add this fun activity to your morning routine.
Before the kids arrive I make some sort of creative figure with the magnets. I confess, I find this to be quite fun to do! My students have calendar work each morning, and when they finish they try to calculate the value of my creation.
Then, I draw a place value chart on the board and we dismantle the creation. We sort the tens, ones, and hundreds. We regroup if needed, and then check our answers. This is a super easy way to practice and have fun with place value and the kids love seeing what new creation is on the board each morning!