Thank you so much, @mother2chicks! Not really worked in it...as a kid I enjoyed picking up rocks and trying to figure out what they were, but it was my sister who had the actual collection. My favourite "kid rock" experiences were picking up pieces of shale from construction sites and breaking them open to see if they hid any fossils. More often than not, they did! Studied geology as a compulsory subject (one of my favourite courses) in university. South Africa has such a rich geological heritage it's pretty hard not to get excited about the rocks around us here...:-)