This has been so helpful in my first grade classroom!
I attached this sign to a popsicle stick and taped it to the inside wall of my finished work bucket.
Now, when students go to turn something in, they are reminded to check for their name. I leave a cup of pens and pencils next to the bucket so that students will add their name if they forgot to put it. I have seen a huge decrease in my "no name" paper stack since adding this small element.