We explore a different material each week. I have a tray for this kind of tactile activities. Till now, we did some different shapes of pasta, beans and sand. First I introduce the material alone and then I hide small objects into the material for him to find. This week we did cotton balls. He enjoyed it and played for a while.
After a bit of toy hide and seek, I give him some cups or a box to fill and dump the material. He enjoys dumping more than anything .