Fill a plastic tub with dry rice, raw pasta, Kinetic Sand or water beads, and let the kids go to town scooping, pouring and digging for little treasures you've hidden. These sensory bins expose them to different textures and helps them work on their fine motor coordination.
Source https://www.goodhousekeeping.com/home/craft-ideas/how-to/g1389/diy-kids-activities/