These little craft balls my mom calls "pom poms," so I am calling this the "pom pom game"
It is a great activity that helps with concentration and hand eye cooridination, and having participated in it myself, it is very meditative.
Simple have some large tweezers and a bowl of pom poms. Then have the children fill empty egg cartons. It is that simple, yet it holds their attention for a long time and they have a lot of fun with it.