How to get all the collections (collectables) in virtual villagers 2?

Answer 1

You can collect Butterflies and Shells initially
You can collect Pebbles after you finish off the dam
You can collect Beetles after you clear the thorns

Buying Exploration Tech helps

Check this site :
http://www.ldwforums.com/ubbthreads/ubbthreads.php?ubb=postlist&Board=32&page=1

Answer 2

I have completed everything except the the collections, and I'm only missing one beetle. Once you're able to collect everything like the above answer states, you just have to wait and keep looking.