Double puzzle: http://puzzlemaker.discoveryeducation.com/DoublePuzzleSetupForm.asp
Cryptogram maker: https://www.kidzone.ws/puzzles/cryptogram/index.asp
Puzzle makers: https://natalialzam.wordpress.com/2014/02/04/generadores-de-juegos-para-lenguas-extranjeras-en-lengua-extranjera/
Fake social media (for example, fake messages): https://natalialzam.wordpress.com/2019/03/29/fake-social-media-generators-ideas-for-the-classroom/