Template:Done explains how to add Done to a talk page, Teahouse, etc. But that's not all! Dozens of other icons/images are available on that page. It's Great!
References
^Worthen, Mark. "This is a helpful template tool." Journal of Groovy Tools 27, no. 5 (2020): 56.
These are online tools I use all the time. All are free; none of them contain affiliate links. Except for the Wikimedia URL Shortner, these are all external links, i.e., not part of Wikipedia or its sister sites.
Wikimedia URL Shortner - Links to the following domains may be shortened using this tool: *.wikipedia.org, *.wiktionary.org, *.wikibooks.org, *.wikinews.org, *.wikiquote.org, *.wikisource.org, *.wikiversity.org, *.wikivoyage.org, *.wikimedia.org, *.wikidata.org and *.mediawiki.org.
Case Converter - Case Converter is a simple free online tool that converts any text to either lower case, upper case, proper or sentence case.
Remove Line Breaks - You can remove line breaks from blocks of text but preserve paragraph breaks with this tool.
Character Counter - Useful when you want to experiment with different short descriptions and see how close you come to the ideal 40 characters.
Sᴍᴀʟʟᴄᴀᴘs text tool - Create official looking Small Caps text with this tool, for uses other than Wikipedia. Small Caps are uppercase characters with the 'x-height' of normal text. Among other uses, Small Caps are used for Bluebook legal citations, although on Wikipedia small caps are discouraged for understandable reasons. If you want to use small caps on Wikipedia, use the Smallcaps template, {{sc1}} or {{sc2}}. That template explains its limitations in the Technical notes section. There is also a helpful section, Reasons to use small caps.
Edit your User page and insert one or more of the following bolded strings (including the four curly braces), preview your edit, and when it looks right, save it.
To see a visual display of the below templates check out the Tip of the Day Display template gallery.
{{totd}} – the main userspace version of the tip of the day template, with border, centered in the middle of the page. Complete with inspirational light bulb. Border color can be custom modified.
{{totd b}} – a more compact version of the above template. Useful for columns.
{{totd3}} – a purple box version, useful for displaying the tip in columns.
{{totd-random}} – this is the tip of the moment template, which automatically displays a different tip every time you enter a page it is on. If it doesn't update, try clearing your browser cache.
{{totd-tomorrow}} – this shows tomorrow's tip, and is used by Wikipedia tipsters to make sure that the tips are up-to-date and corrected before they go live.
{{tip of the day}} – the borderless version, with light bulb.
Done to a talk page, Teahouse, etc. But that's not all! Dozens of other icons/images are available on that page. It's 
Great!
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