BONNYCO Invisible Ink Pen and Notebook Pack of 16 – Mermaid Spy Party Favors with UV Light

This BONNYCO Invisible Ink Pen and Notebook Pack includes 16 individual sets, each with a UV light pen and a small notepad, making it a practical choice for mermaid-themed party favors or spy-themed activities. The pens measure 5.11 inches and come with batteries already installed. Casing colors include purple, pink, blue, and green, while the transparent ink is identical across all pens.

What’s in the pack?

• 16 sets, each containing one invisible ink pen with UV light and one small notepad
• 4 purple pens, 4 pink pens, 4 blue pens, and 4 green pens
• Each set comes in a zip-close mermaid bag

How does the invisible ink work?

Write secret messages or draw on the notepad with the pen. The ink dries clear, so nothing is visible to the naked eye. Shine the pen’s ultraviolet light on the writing to reveal it. The ink works on paper, cardboard, fabric, and even skin. It washes off skin easily with soap and water.

Specs at a glance

Creative ways to use these spy pens

• Set up escape room clues or treasure hunts
• Write secret messages for detective games
• Draw temporary “tattoos” on skin (washable)
• Create riddles or hidden answers for party games

Ideal for birthday parties and events

Each set is individually bagged, so they’re ready to hand out as party favors, pinata fillers, classroom prizes, or goody bag stuffers. They work well for mermaid, ocean, or under-the-sea themes, as well as Halloween, Christmas, Easter, and other celebrations. The pack is suited for children aged 3 to 12.

Frequently asked questions about this pack

Are the batteries included?

Yes, each pen comes with batteries already installed.

What surfaces can the ink be used on?

The ink works on paper, cardboard, fabric, and skin. It washes off skin with soap and water.

What is the age recommendation?

The set is recommended for children ages 3 and up.