Next, add one tablespoon of rubbing alcohol per cup of rice (I used 5 cups of rice and 5 tablespoons of alcohol). Add the food coloring (I used about 8 drops) and seal the bag. Mix well. I recommend starting with less and then adding more if needed. Too much yellow can end up looking orange.
Spread out to dry. I used an extra large tupperware container that I lined with wax paper.
Let the mixture dry for about four hours then it will be good to play with. I usually make mine the night before so it has plenty of time to dry. You can test that it's dry and ready with a paper towel. Once it is dry, it will not stain hands.
Add scoops, plastic cups, toy lemon slices, and toy ice cubes.
Notes
Sensory bin rice will keep for over a year if kept clean, dry, and in an airtight container or bag.The smell from the rubbing alcohol will dissipate. This activity requires adult supervision and is not meant for children under 3 since the small pieces could be choking hazards.