DIY Valentine's Day Molecule Centerpiece

2 min read September 13, 2026 Natalie Mayhew
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This "Love Molecule" Valentines Day centerpiece is one to keep your "ion". After all, what better time to create a love reaction than on Valentine's Day? All you need to create this "mole-cool" centerpiece are a few basic, inexpensive supplies and these simple laboratory procedures. Not only does it make a great focal point at a dining table, dessert table, or activity station it doubles as a STEM building activity for older kids.

Project Time
20 to 30 min
Difficulty
Beginner
Step
1

First, cover a DIY Medium Foam Ball in glue and then roll the ball in Bright Glitter. Let Dry.

Note: May take more than one coat.

DIY Valentine's Day Molecule Centerpiece step 1
Step
2

Next cut varying lengths of red & white paper straws and use bamboo skewers inside the straws to insert them into the foam ball.

Space these evenly around the ball but with random heights. Ensure a small amount of the skewer (with the spike) is left outside the straw.

Once complete add a Glitter Valentine Foam Heart to the end of each skewer.

DIY Valentine's Day Molecule Centerpiece step 2
Step
3

Next, remove the lid & straw from a Science Party Cup with Straw and fill the cup with Valentine Foam Hearts.

DIY Valentine's Day Molecule Centerpiece step 3
Step
4

Next, use the top of the bottle to make an indent on the bottom of the foam ball. Then use scissors or a craft blade to increase the depth of the indentation.

DIY Valentine's Day Molecule Centerpiece step 4
Step
5

Now insert the top of the bottle into the indent securing it in place. Optional: Use a low temp glue gun to further secure the ball.

The Love Molecule Centerpiece is now ready to display, its bound to set of a love reaction with the kids!

For more ideas and inspiration, be sure to check out my Science Themed Valentines Day Party, Valentine's Day Experiments for Kids and DIY Periodic Table Backdrop

DIY Valentine's Day Molecule Centerpiece step 5

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