<sub>[Fortnightly](https://puzzling.meta.stackexchange.com/questions/3292/what-should-the-subjects-of-our-fortnightly-topic-challenges-be-with-updates) [Topic](https://puzzling.meta.stackexchange.com/questions/3292/what-should-the-subjects-of-our-fortnightly-topic-challenges-be-with-updates) [Challenges](https://puzzling.meta.stackexchange.com/questions/7032/fortnightly-topic-challenges-threrun-topic-suggestions) are all water under the bridge now, so we will do something *completely* different.</sub> ---------- <p><strong>What to Do</strong>:</p> <p>If you have an idea for a tag or a theme of any kind to use as a topic challenge, post it as an answer below. (Do note, you can propose anything, not only a tag). Each answer should start with the title of the topic in a markdown heading (<code>## Title ##</code>). <strong>Only one suggestion per answer, please.</strong> <a href="https://puzzling.stackexchange.com/tags">Here is a list of all tags, to help.</a></p> <p><strong>At the start of each month, the highest-voted answer to this post will be selected as that month's topic.</strong> Starting from today, users can propose their themes or topics. The selected answer will then be deleted to reduce clutter in the list.</p> <p>After the selection, a new question will automatically be created in <a href="https://puzzling.meta.stackexchange.com/questions/4351/fortnightly-topic-challenge-1-movies">this format</a>. An answer will then be posted to that question with links to all the posts in the featured topic in the fortnight.</p> <p>We'll again keep a list of all the topics.</p> <p>Happy Puzzling!</p> ---------- The first MTC will start on January 1st, 2022. In the meanwhile, topics will be gathered and voted on.