Food coloring pen Craft & Design Home By Phillip TorronePhillip Torronecurrent: @adafruit - previous: MAKE, popular science, hackaday, engadget, fallon, braincraft ... howtoons, 2600... View more articles by Phillip Torrone @adafruit February 10th, 2007 12 Evil Mad Scientist Laboratories has a few interesting ideas for writing on candy hearts with a food coloring pen, along with how to toss the newly inscribed treats with trebuchets… More: The Perfect Ammunition for Valentine’s Day – Link. Food colour markers – Link. Food coloring pens – Link. Tagged DIY Projects Holiday Projects By Phillip TorronePhillip Torronecurrent: @adafruit - previous: MAKE, popular science, hackaday, engadget, fallon, braincraft ... howtoons, 2600... View more articles by Phillip Torrone @adafruit Discuss this article with the rest of the community on our Discord server! ADVERTISEMENT Subscribe now to Make: MagazineThe official magazine of Maker Faire Related Articles from Make: From the Shed: New ArrivalsFixHub | Power Series Soldering Toolkit$299.95Make: Skill Seeker Young Maker Edition - PDF$12.99Qubits STEM Construction Kit for Kids$100.00 Get Make: Magazine $19.99