Hi Chris
This is one of the things that packages based around SCORM and AICC standards do quite well. The R in SCORM stands for Reusable!
The easiest way to do this is to simply copy and paste.
If you open the 'copy from' module in courselab and then open a second copy of courselab which has the 'copy to' module in it you can then select the page, pages or even parts of a specific page and paste them.
Handle this just like any other copy and paste file activity.

If you have pages that you constantly use then you could lso consider saving as a template so it's available in the 'my templates' area.

BTW there is are strands on this already on the forum. Use the search and you'll find them