David,
You could copy a title and place it in any tiddler. A small extension I have intended to add for a while is to as a rule when copying to the "system clipboard" to also capture this in a tiddler for immediate reuse if necessary, so I just did it, import the attached JSON. I have also demonstrated the use of the value in {{$:/HistoryList!!current-tiddler}} by providing a last tiddler display under the search in the side bar. If installed the copy text and title button macro's are also used.
If you look inside the copy text and title tiddlers you will see something like the following;
<$action-setfield $tiddler="$:/temp/pastebox/title" text={{!!title}}/>
I recommend copying this line and in the macro and modifying it for your target tiddler eg; $:/.giffmex/Current.source/title
FYI: I store all my macros under [prefix[$:/PSaT]]
The recently edited or navigated to tiddler is what appears in the "last-tiddler", I have another package called focused tiddler (which others do not like the name of) which also displays the full history of activity in the current wiki session. Ay some point I may extend last-tiddler to list N tiddlers and also capture the titles of tiddlers that we close, so reopening closed tiddlers is easy.
So happy to help David
Tones