القلم السحري

Our 10-year-old is obsessed with writing invisible messages to friends—the UV light in the lid works perfectly to reveal them. Setup took seconds with the three included batteries, and it's solidly built for a kid's hands.

I bought this for leaving surprise notes for my kid around the house, and the UV light reveals them perfectly. The three included batteries were a nice bonus so I could start writing right away.

The UV light in the lid is so clever—my kids spent an hour passing secret notes back and forth. It's great for a private journal too, and the three included batteries meant we could start right away.