Do you like games?
Then here is one for your free time:
"Life's tough in the StoneAge. To make things worse our man Sam isn't really known for his smarts; left to his own devices he probably wouldn't last a day! However, although he may be all brawn, fortunately he's got your brain to help him out! And he'll need it too as he's got to find food, make weapons, survive sabertooth tigers, capture wooly mammoths, evade hungry crocs, drive off enemy tribesmen and to top it all off, keep his girlfriend Lucy happy! So let's get prehistoric and help Sam use his noggin in this crazy point-and-click adventure."