Puzzles & Brain Teasers
http://www.thekidzpage.com/onlinejigsawpuzzles/
http://www.hellokids.com/r_1743/free-online-games/kids-puzzles-games
http://www.learninggamesforkids.com/word-games/word-search-games.html
http://www.primarygames.com/puzzles/word_searches.php
https://www.learn4good.com/games/puzzle.htm
https://www.vocabulary.co.il/word-play/word-search-game/
http://www.whenwewordsearch.com/word_search_puzzles/teenage_word_searches.jsp
https://en.islcollective.com/resources/search_result?Vocabulary_Focus=Brainteasers