Science Supplies to Have on Hand (To Keep Those Kids Learning!)

We are big fans of STEM activities for kids at our house. You will always find my girls up to some fun STEM activity. At nearly 9, for sale Monkey is a STEM fiend. Once, medicine she even decided to invent skates for her doll. She has a creative and inventive mind, which we love to encourage!

When Monkey has the desire to conduct a science experiment, we can’t always run to the store to purchase new supplies. I want her to be able to do whatever experiments she wants when inspiration strikes, so we try to keep a few supplies for science experiments on hand so she can do the experiments on the spot. Luckily, a lot of common experiments use the same science supplies. Here is what we try to keep on hand for her:

  • Food coloring
  • Baking soda
  • Alum
  • Talcum powder
  • Vegetable oil
  • Batteries
  • Copper and steel wire
  • Clay
  • Microscope
  • Borax
  • Gelatin
  • Craft sticks
  • Wood scraps
  • Tape (electrical tape, masking tape, scotch tape, double-sided tape)
  • Measuring tools (ruler, tape measure, compass, measuring cups)
  • Scissors
  • Eye dropper
  • Glass slides
  • Magnifying glass
  • Candles
  • Vinegar
  • Corks
  • Paper
  • Notebook for writing observations
  • Corn starch
  • String
  • Aluminum foil
  • Plastic wrap
  • Latex gloves
  • Balloons
  • Steel wool
  • Sponges
  • Shaving cream
  • Yeast

We also try to keep a lot of perishable science supplies, too, but these basics help her have a wide variety in experiment options. We have come up with a lot of fun science experiments simply using what we have on hand at the time!

My recommendation is that if you want to start building up a science supply list or STEM activity box, start small and add items slowly over time. Purchasing all supplies at once can cost quite a bit, but if you throw in a couple of science-related items every time you go to the store, you’ll soon have your list completed and you won’t even notice the cost.

Check out the full list of what is in our STEM activity center!

What supplies do you always keep on hand for science projects?


  1. I’d like to be in your homeschool class! With all of those supplies, it looks like you are going to have much fun this year!

    My kids are now in college, and I remember so many fun day doing experiments with them. I hope and pray you will have a wonderful school year.

    Came over on tell it to me.


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