Popsugar Family Crafts Kid-Friendly Crafts 250 Easy, Fun Ways to Get Crafty With Your Kids! 24 May, 2018 by Leah Rocketto View On One Page Photo 236 of 250 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 236 Invisible Ink Message in a Bottle Minieco's cool valentine involves a secret message written in lemon-juice invisible ink (heat it up to see what it says), paper hearts, and a tiny bottle. Lots of fun for the craft maker and the recipient! Source: Minieco Previous Next Start Slideshow CraftsKids CraftsKid ActivitiesDIY