A little toy, to display all your user subpages - that is, all pages in "User:YOURNAME/" and "User talk:YOURNAME/";
{{Collapse top|Subpages for this user}}
<div>Subpages for this user:{{Special:Prefixindex/User:YOURNAME/}}<br>Talk pages;<br/>{{Special:Prefixindex/User talk:YOURNAME/}}</div>
{{Collapse bottom}}
...of course, remember to replace YOURNAME with your own user name.
Result (for me);