16PCS Invisible Ink Spy Pen Magic Pens for Kids Magic Party Favors, Invisible Ink Pen for Writing Secret Message, Spy Party, Kids Party Favors

I purchased these to use with children at our Bible School. They loved them! These are brightly colored and work perfectly. Children loved writing an invisible message which friends could then read with the UV light. We used with children from age 3 thru teens.

What kid doesn't love a spy pen? I took one for myself (I'm 46 lol) and one of the cute little tablets that I bought with it as party favors for first graders. She had boys and girls at her party, which the colors were perfect. You pull the tab to release the battery connection and that's all there is to it. It already comes preloaded with a battery. What a great price for something different (instead of just candy) inside of their gift bags. You can see it in complete dark and also see it in bright light. The only tricky part is knowing where you wrote.

Big hit in our goody bags!

Works great.

I whipped these markers out to show my 7 year old nephew so he could use them for his birthday party and he was AMAZED. They work so great! We had a blast just exchanging messages back and forth and the marker images show up easily with the provided lights. And you get a lot for the price point. No complaints!

Very useful as an object lesson on "the light of Christ will open our eyes to truth" (gave the kids index cards with the word truth on them, and they had to use the lights to see "truth"!) then let them play with the pens themselves. Great fun and a good lesson.

I bought these for my daughter’s class for their glow day. Each kid got their own pen, they LOVED it.

My students had a great time writing secret messages!!!