The other night, I thought it would be fun to prepare some rainbow ice cubes so my boys could have rainbow water to drink on St. Patrick’s day.
I grabbed the Red, Orange, Yellow, Green, Blue, and Violet (otherwise known as purple) and I mixed up a batch of rainbow ice-cubes.
Ok, so you may have noticed that ROYGBV = six letters and my ice-cube trays have 7 sections in each row. I mixed some blue and purple gels together to make an extra colour that we’ll call Indigo, so I could fill the tray.
I popped the tray in the freezer, and fast-forward to today. Happy St. Patrick’s Day! March 17th is always extra special at our house because in addition to celebrating all things green and Irish, we’re also celebrating my hubby’s birthday! 
We had an awesome day celebrating! We headed out of town and to a near-by city for an afternoon of laser-bowling. They turn out the lights, and you bowl with glow in the dark pins, disco balls, neon lights, music playing etc. It was a first for us. We’ve bowled before, but never in the dark, and we all bowl fairly horribly, which made it even more fun. It was a great afternoon. Then we went out for dinner, and came back home for cake. In all honestly, I’d completely forgotten about the rainbow cubes, and I didn’t remember them until I went into the freezer to get out some ice cream to serve with the cake!
Woohoo!! Isn’t it great how sometimes the simplest things make the biggest impressions? Everyone thought this was the COOLEST water EVER. Doesn’t it look awesome? Whip some up! Your kids will think you’re THE BEST!
My advice? Don’t wait until next St. Patrick’s Day to try this. Surprise your kiddo with a glass of rainbows on a dull or gloomy day “just because”. It really doesn’t get much easier than this. Go on! Brighten their day!!

Wow! So pretty and yet so simple. This is is definitely one to pin and try in the future.
Such a great idea!!! I love your blog!!!!
is it food coloring that you used?
Yes, just a drop or two of food colouring in each bottle. This was so fun! We’ll have to do it again this Spring. The kids loved it!
Oh great idea! This must be a blast for the kids to drink up!
wow! My boys would love this! Its just food coloring and water right?? I am gonna try this.
Yep, that’s it, Jennifer – just water and food colouring! How easy is that?!
I am so delighted by your creativity!!!!!!Love this and i can’t wait to share with my preschoolers!!!!!!!!
mmmmm. my mother did this when i was small and added juice to the cubes to create a punch of sorts.
Mmmmmm, that would be so much tastier than water, Jessica! lol
Is this just food coloring added to water? What “gels” are you referring to? Thanks for your help; I’d love to do this one!
You can use regular food colouring drops, Brie, but if you want to know the gels that I’m talking about they’re
Wilton Icing Gels. If you scroll down the home page of my blog, almost to the bottom (just a little bit under the pic of the Icicle Ornaments in the side bar), you’ll see a section called MY FAVES. The icing gels are listed there. You can click on them, and be taken to Amazon.com to see the details about the gels.
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This is totally awesome! I thought of the idea too and googled how to do it. My only question is: What happens when the ice cubes melt??? Do the colors leak and the water become a gray mess?
I suppose it would if you let it sit, Abby, but my guys drank it so quickly we didn’t have the chance to find out.