10 Base Filler Ideas for Sensory Trays - Table Of Contents 1. Play Sand 2. Dyed Colored Salt 3. Ombre Beans 4. Scented Unicorns & Rainbows Orzo 5. Neon Garbanzo Beans 6. Butterfly Pasta 7. Lentil Garden 8. Classic Rainbow Rice Tray 9. Bird Seed 10. Cereal Construction Sensory play includes any type of activity that stimulates a child's senses and develops milestone