Rainbow Experiments & Crafts

Rainbow Crafts & Experiments for toddlers, preschoolers and primary school kids.

Rainbow Crafts & Experiments ParraParents
Rainbow Crafts & Experiments ParraParents

What kid doesn’t love rainbows? I know mine do and so I have decided to come up with a list of rainbow related experiments and crafts we can do!


Rainbow Melted Crayon (picture by 52 Kitchen Adventures)

10Rainbow Melted Crayon Art

I am yet to try this one myself but it looks like it would be a lot of fun. My children are scared of the hair dryer so will have to wait a bit. All you need is some cardboard, a hair dryer and crayons.

  1. Glue crayons on canvas/cardboard
  2. Use blow dryer to melt crayons
  3. Have an awesome piece of artwork.

For full instructions, visit 52 kitchen adventures.

Rainbow Ceiling Experiment

9Ceiling Rainbows

  1. Darken a room
  2. Switch on the flashlight and place the cup on top of it
  3. Pour some water into the cup and watch the ceiling for rainbows
  4. Observe the rainbows on the ceiling
Fruit Loop Rainbow Craft (picture by Housing a Forest)

8Fruit Loop Rainbow Craft

Materials Needed:

Simply print out the template, cut it out. Separate all the fruit loops into different colours. Add some glue and have your little one stick the fruit loops on to form a rainbow.

For full instructions visit, Housing a Forest

Rainbow by Sunshine (Image by science kids NZ)

7Rainbows by Sunshine

You’ll need:

  • sunlight
  • White paper
  • clear glass of water


  1. Take the glass of water and paper to a part of the room with sunlight (near a window is good).
  2. Hold the glass of water (being careful not to spill it) above the paper and watch as sunlight passes through the glass of water, refracts (bends) and forms a rainbow of colours on your sheet of paper.
  3. Try holding the glass of water at different heights and angles to see if it has a different effect.

For full instructions visit, science kids NZ

6Sparkling Fizzy Rainbows

You’ll need

  • Colored Baking Soda Dough (click here for instructions)
  • vinegar and cups to put it in
  • pipettes (optional)
  • pan to contain the rainbow and the sparkly fizzy eruptions


  • Arrange your baking soda dough into a pan in the colours of a rainbow
  • Use pipettes to add vinegar!  Ask your children what they think will happen when you mix the vinegar and the colored baking soda dough.  Ask them why!  Then let them get to work!!  They will see the vinegar and baking soda react to release carbon dioxide. Carbon dioxide is a gas and makes bubbles wherever the other two reactants touch!

For full instructions visit Preschool Powol Packets


Rainbow Jar Science Experiement (By Playdough to Plato)

5Rainbow Jar

You’ll need:

  • A tall, see-through container (I used a clean mason jar.)
  • Honey
  • Light corn syrup
  • Dish soap (either blue like Dawn or green like Palmolive)
  • Olive oil
  • Rubbing alcohol
  • Water
  • Food coloring
  • A dropper

Pour in all the ingredients into the jar. You will want to use the food colouring with the water before you pour that in. Full instructions can be found at Playdough to Plato (clever name).

Rainbow Bubbles (by Science Sparks)

4Playdough Bubbles

You’ll need:

  • An empty clear bottle
  • Washing up liquid
  • Water
  • A sink
  • An overcast day (works best)
  1. Fill the bottle about three quarters full with water
  2. Add a squirt (scientific measuring there!) of washing up liquid
  3. Quickly tip the bottle and pour the water out fast.
  4. You will find that the bottle is left full of bubbles.
  5. These will look clear and normal to begin with but place the bottle on a windowsill and wait and watch over the next 30 seconds.
  6. You will find that the bubbles will start to show signs of colour that will get stronger and stronger and that each bubble will look like it has been coloured like a rainbow!

For full instructions visit Science Sparks

Rainbow Cupcakes (by Preeschool Powol Packets)

3Rainbow Cupcakes

You’ll need:

  • white cake batter
  • food colouring
  • cupcake pan and liners
  • spoons
  • toothpick

1.  Pour your white cake batter into 3-6 different bowls, depending on how many colours you want in your rainbow cupcakes.<
2.  Add food colouring to each bowl and stir very well to make the colours you want in your cupcakes.  (Hint: Gel food colouring works better than liquid food colouring!)
3.  Spoon a small amount of each colour into each cupcake liner.
4.  Use a toothpick to gently swirl, two times, through all the colours together.
5.  Cook according to your recipe instructions!  Cool completely and frost!  Then get ready for squeals of delight when they open up their surprise rainbow cupcakes!!

Rainbow Absorption (By Teach Beside me)

2Rainbow Absorption

You’ll need:

  • A few plastic cups
  • Water
  • Food colouring
  • Some paper towels
  1. Add water to some plastic cups.
  2. For each cup of water, add a few drops of food colouring. Make sure each cup has a different colour. You’ll want the primary colours red,blue and yellow.
  3. Add the end of a paper towel in one cup of water and the other end in another. Place an empty cup in between and have the paper towl bend into this cup as well at the centre.
  4. Wait and observe how the colours are absorbed into the paper towel. Observe what happens when the colours mix

Full instructions are found at Teach Beside Me


Crystal Rainbows (By little bins for little hands)

1Crystal Rainbows

You’ll need:

  • 9 TBL Borax {found with laundry detergent}
  • 3 Cups Water
  • Jars or vases
  • Popsicle sticks
  • Pipe cleaners in rainbow colors
  1. Boil the water. Turn off the heat. Stir in borax until dissolved. Carefully pour into jars.
  2. Take your pipe cleaners and cut to fit inside your jar! Make sure you can get your rainbow in and out easily. I put the pipe cleaners in a traditional rainbow order and folded the tops around the popsicle stick.
  3. Add the pipe cleaner creation to the jars
  4. Leave overnight

Full instructions at Little Bins for Little Hands