15 Blue Day Crafts for Preschool Kids

Blue Day at preschool is the perfect excuse to slow down, splash color, and make something kids feel proud to show off. If you’ve ever scrambled for ideas that look “wow” but are simple for tiny hands, this list is for you.

Each project uses easy supplies, has short steps, and finishes fast—so you can keep attention spans happy.

Pick a couple, set out a blue bin of materials, and watch little makers light up.

1. Ocean-Swirl Shaving Cream Paper

Marbled blues look magical and feel like science in action. Kids swirl, press, and reveal dreamy ocean patterns that dry into frame-worthy art.

Materials Needed:

1. Shaving cream
2. Blue food coloring or liquid watercolor
3. Cardstock

How to make it:

1. 1. Spread a layer of shaving cream on a tray.
2. 2. Drip blue color on top and swirl gently with a stick.
3. 3. Press cardstock onto the foam, then lift.
4. 4. Scrape off foam to reveal the marbled print and let dry.

2. Bubble Wrap Jellyfish

These jellyfish shine with bumpy texture and floaty ribbons. The bubble wrap makes paint stamping easy and satisfying.

Materials Needed:

1. Bubble wrap
2. Blue paint
3. Ribbon or yarn

How to make it:

1. 1. Cut a dome shape from bubble wrap.
2. 2. Paint the bubbly side blue and press onto paper to print.
3. 3. Glue or tape blue ribbons under the dome for tentacles.
4. 4. Add eyes with marker or stickers and let dry.

3. Sky-in-a-Bag Sensory Window

This squishy “sky” sticks to a window and calms busy hands. Kids love pushing the glitter and clouds around.

Materials Needed:

1. Zip-top bag
2. Blue hair gel or dyed clear gel
3. Cotton balls

How to make it:

1. 1. Fill the bag halfway with blue gel.
2. 2. Add a few cotton balls as clouds and a pinch of glitter if desired.
3. 3. Seal the bag and tape the top edge shut for safety.
4. 4. Stick to a sunny window and press to move clouds.

4. Indigo Ice Paint Stamps

Frozen paint cubes glide and melt into rich blues. The chilly twist keeps kids curious and creates soft watercolor effects.

Materials Needed:

1. Ice cube tray
2. Blue tempera or watercolor
3. Craft sticks

How to make it:

1. 1. Mix blue paint with a little water and pour into tray.
2. 2. Add craft sticks as handles and freeze.
3. 3. Pop out paint cubes and stamp or glide on paper.
4. 4. Let the swirly, melting patterns dry flat.

5. Night-Sky Scratch Constellations

Kids make their own constellations by scratching stars through an inky blue layer. The reveal is pure magic.

Materials Needed:

1. Cardstock
2. Blue crayon
3. Toothpick or craft stick

How to make it:

1. 1. Heavily color the paper with blue crayon until covered.
2. 2. Layer a second coat for a deep, waxy surface.
3. 3. Use a toothpick to scratch dots and lines to form “stars.”
4. 4. Blow away crumbs and show off the sky.

6. Raindrop Drip Art Canvas

Gravity turns drips into raindrops on a mini canvas. The result looks like modern art, with very little mess.

Materials Needed:

1. Mini canvas or thick paper
2. Blue liquid watercolor or thinned paint
3. Dropper or spoon

How to make it:

1. 1. Stand the canvas upright or prop on a book.
2. 2. Use a dropper to place blue drops at the top edge.
3. 3. Let the paint drip down naturally.
4. 4. Add a few more layers for depth and let dry.

7. Denim Fish Collage

Scrap textures make these fish look fancy and tactile. The blue-on-blue collage feels like an undersea patchwork.

Materials Needed:

1. Blue paper scraps or fabric (denim, felt)
2. Glue stick
3. Googly eyes or markers

How to make it:

1. 1. Cut simple fish bodies and fins from blue scraps.
2. 2. Arrange pieces on a background for overlapping texture.
3. 3. Glue down and add eyes.
4. 4. Draw bubbles or seaweed to finish.

8. Sea Glass Playdough Cookies

Translucent “sea glass” beads pressed into dough look like beach treasures. Kids practice fine motor while designing.

Materials Needed:

1. Blue playdough
2. Flat-back gems or blue buttons
3. Cookie cutter

How to make it:

1. 1. Roll playdough into a flat patty.
2. 2. Cut circles or shapes with a cutter.
3. 3. Press gems or buttons into the surface.
4. 4. Peel up and display on a tray.

9. Moonlit Bear Silhouette

A glowing moon behind a simple bear shape looks stunning. Kids paint fast, then stick the silhouette on top for instant drama.

Materials Needed:

1. Blue paint
2. White paper and black paper
3. Glue

How to make it:

1. 1. Paint a blue night sky on white paper; add a pale circle for the moon.
2. 2. Cut or pre-cut a simple bear silhouette from black paper.
3. 3. Let the sky dry, then glue the bear in front of the moon.
4. 4. Add stars with white crayon or paint dots.

10. Frosty Tape-Resist Initials

Crisp white letters pop against a blue wash. Pulling off the tape is the best part.

Materials Needed:

1. Painter’s tape or washi tape
2. Watercolor paper
3. Blue watercolor

How to make it:

1. 1. Tape a big initial on the paper with straight strips.
2. 2. Brush blue watercolor over the whole page, dark to light.
3. 3. Let it dry completely.
4. 4. Peel tape to reveal the bold white letter.

11. Starry Sky Glitter Jars

These calm-down jars shimmer like the Milky Way. A quick shake turns the whole jar into a galaxy.

Materials Needed:

1. Clear plastic jar with lid
2. Water and clear glue
3. Blue glitter/sequins

How to make it:

1. 1. Fill jar mostly with water and a squeeze of clear glue.
2. 2. Sprinkle in blue glitter and a few star sequins.
3. 3. Close lid tightly and tape or hot-glue seal (adult).
4. 4. Shake to watch stars swirl and settle.

12. Blue Feather Wind Wands

Light, fluttery wands make every breeze feel magical. Kids decorate, then dance them through the air.

Materials Needed:

1. Blue feathers
2. Wooden dowel or straw
3. Ribbon or washi tape

How to make it:

1. 1. Tape or glue a bundle of blue feathers to one end of the dowel.
2. 2. Wrap the connection point with washi tape to secure.
3. 3. Tie on a few ribbons for extra movement.
4. 4. Wave outside and watch it flutter.

13. Bubble-Print Planet Posters

Bubble prints turn into distant blue planets. Cutting circles makes the textures pop like real cosmic surfaces.

Materials Needed:

1. Dish soap, blue paint, water
2. Straw or whisk
3. White paper

How to make it:

1. 1. Mix paint, a squirt of soap, and water in a tray.
2. 2. Blow bubbles with a straw or whisk until they rise.
3. 3. Press paper lightly onto bubbles to print.
4. 4. Cut circles from the print and glue onto black paper.

14. Indigo Leaf Rubbings

Nature textures appear like magic under a blue veil. Kids love the reveal as veins and shapes pop.

Materials Needed:

1. Leaves
2. White paper
3. Blue crayon

How to make it:

1. 1. Place a leaf underside-up on the table.
2. 2. Lay paper on top and hold steady.
3. 3. Rub the side of a blue crayon across the paper.
4. 4. Lift to see the leaf pattern and repeat with new leaves.

15. Paper Plate Submarines

Chunky windows and a bold blue body make these subs adorable. Hanging them in a line looks like an undersea parade.

Materials Needed:

1. Paper plate
2. Blue paint or paper
3. Bottle caps or paper circles

How to make it:

1. 1. Cut a small rectangle “periscope” from scrap and attach to the plate edge.
2. 2. Paint the plate blue or cover with blue paper.
3. 3. Glue on bottle caps or circles as porthole windows.
4. 4. Draw details and add a string to hang.