Begin by dividing your beans up in the large storage bags (divide them into however many colors you want to make, I did one cup per color).
Add about ¼ cup of rubbing alcohol and several drops of food coloring. I always start with less food coloring and add more if I need it.
Close the bag and shake well so the color is distributed evenly.
Let the beans sit for 10 to 15 minutes then lay the beans flat to dry on a tray or baking sheet that has been covered with aluminum foil or parchment paper. Next, let the beans air dry (I let ours dry overnight).
Test that the beans are completely dry by dabbing them with a paper towel.
I use large Tupperware containers as our sensory bins. They’re super easy to store.
Notes
This activity is NOT taste safe or meant to be eaten.Please note that raw beans should never be eaten or placed in the mouth. Do not use kidney beans as raw kidney beans can be toxic. This activity is meant for children who no longer mouth things.