KAFH Fossil evening for the Kettering scouts

Were holding 80minutes event for the scouts.
What we so far:
Some fossils on display, fossil work shops including how to find fossils and how to use the equipment, Microscope set with so we can view amber fossils, Fossil quiz and work sheets and Space(how the earth was made).

Any ideas what we could add to this?
Were looking for people to donate fossils if interested?
Also we need a cheap printers so were can print A2 KAFH posters any ideas?

Any help would be great thanks KAFH