I’m not fancy. And I suspect most parents prefer simple too. Sometimes simple is the most efficient and effective method for teaching our children.
If you’re looking for a quick activity/sensory bin, place a bunch of colored scraps of paper in a container/bin. The more different kinds of texture and weight of paper the better. Then add a couple pair of scissors. You’d be surprised how much the children can enjoy just sniping away at scraps of paper. And it’s great hand exercise and fine motor practice!