DIY Borax Crystal Ornaments

 

This is such a fun and easy project that sneaks a bit of STEM into holiday crafting.

A few days ago, Will and I were in the mood to do a quick Christmas craft. We'd just cleaned the house for guests, so I didn't want to drag out a ton of crafting supplies, and we were already busy, so I didn't want to start something time-consuming and fussy.

Our solution: borax crystal ornaments!

The hands-on time commitment for these ornaments is just a few minutes, although be aware that the crystals will need to be left alone to grow for several hours, and preferably overnight. However, if you've got a countertop or table that doesn't get bumped every five minutes like my countertops and tables do, ahem, you can start this project in the morning and then check back in on it throughout the day to marvel at your crystal's growth!

To make your own lovely borax crystal ornaments, you will need:

• borax. I use this sometimes as a laundry booster, so I have it on hand with my cleaning supplies. If you don't already own it, research its cleaning properties and you might find that you'll be happy to have it on hand, too!
• pipe cleaners. I also have these on hand, although now that the kids are not so much kids anymore (sob), I suppose the time is coming that I'll have used up my last pipe cleaner and will have no need to buy more. Okay, that just got real sad...
• popsicle stick and thread. You don't need to use these specific materials, just something that you can tie to the pipe cleaner and something that you can rest on top of the container. 
• container. To avoid having to rinse a crust of borax crystals out of a jar, I cut the top off of some of the one-liter flavored sparkling waters that Syd and I are unfortunately obsessed with. Such wasteful packaging! Such delicious water!
• water and spoon.
• measuring cups. You'll need one-cup and a quarter-cup measuring cups.

And here's how to make your borax crystal ornaments!

1. Bend a pipe cleaner into a fun ornament shape. It needs to be small enough that it won't touch the sides or bottom of the container that will hold it, but otherwise you can create any shape that you like. The liter bottles that Will and I used were on the narrow side of the spectrum, so after some trial and error Will eventually hit on a spiral design that fit perfectly with plenty of room to spare AND looks utterly magical when crystalized!

You can crystalize two or three ornaments at once with the borax solution we use, and with Will's design we were able to do two spirals per container.

When you've got a design that you like, tie your thread to it, leaving plenty of length to wrap around the popsicle stick later.

2. Put water to boil, and while you're waiting, measure out 1/4 cup of borax and pour it into the bottom of the container you'll be using to grow your borax crystal ornaments.

When the water boils, measure out two cups and pour it into the container, then stir the borax well to create a saturated solution. The boiling water shrunk our plastic bottles a bit, but fortunately they remained usable.

3. When the solution is still, drop the ornament into the container and adjust the depth at which it sits by wrapping the string around the popsicle stick. The ornament shouldn't touch the sides or bottom of the container, and should be fully submerged. You can pour more hot water into the container to submerge the ornament, if needed, because this solution already has WAY more borax than required.

And don't forget that if there's room in your container, you can crystallize multiple ornaments at once!

4. Leave the ornaments alone to crystallize. Over the course of a few hours, they'll go from looking like this--

--to looking like this:

5. After about 24 hours-ish, remove the ornaments and let them air dry on a clean towel.

When they're completely dry, knot the string into a loop and hang them on the tree!

I don't know if these ornaments will last from year to year, but I do plan to store them and see. They're definitely much sturdier than the washing soda crystals that Will and I also tried; those didn't cover the pipe cleaner very well, and they started getting crumbly just a few days later:

Washing soda crystals look interesting through a microscope, but they don't make good ornaments.

If you want to turn this into a whole homeschool unit study (here's the very fun crystals unit study we did a few years ago!), here are some ideas:

• Make those washing soda crystals, and whatever other easy crystal recipes you can find. Compare and contrast!
• Try crystallizing objects other than pipe cleaners. Will and I did this, and we found that shells worked okay and wood worked less okay and was a pain in the butt to make sink. Give a kid enough containers, and I'm sure they could have all kinds of fun scrounging around the house and yard for objects to try!
• Look at the finished crystals through a microscope. My kids LOVED this kid-friendly USB microscope when they were younger. 
• Model crystal shapes. These models are more challenging (click on the broken image to be taken to the pdf model), while these are simpler. Copy them onto pretty cardstock, or draw your own decorations, and they'd also make lovely ornaments!
• Read about crystals. These are some of the books about crystals that my kids enjoyed when they were younger:

If you need to sneak in a media component to get your kids interested, Frozen and The Dark Crystal have fun crystal references, although The Dark Crystal will also scare the snot out of your younger kids.