Need some gifts for your kids, grandkids, nieces and nephews? More specifically, gifts they won't toss aside as soon as they open them? We've got the goods: Maleden Invisible Ink Pens. These ...
3:Write out invisible letters. 4:Light the letters with LED light on top and read your secrets. 5:Paper lacerating function. I won’t put a link because this is the jankiest think I’ve seen in a long ...
Remember those invisible ink pens? A new kind of ink made from algae lets you write or draw now, so someone can see your creation in stages. Freelancer Michael Franco writes about the serious and ...
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