my boys collect thomas, hotwheels, and herbie stuff, so they're my collections too. i've gotten to be a master at drawing herbie :)
i collected pepsi products for a long time, and i still collect oriental things, like chopsticks, fans, etc. i have a huge collection of baby trolls from a long time ago.
i also collect barbies a little. once in a while i get a good one, like this year i got the mary poppins barbie.
i sooo want the audrey hepburn and alice in wonderland barbies someday.
i have always been bad at collecting, i switch interests way to quick, so i have a million little collections like lighters, key chains, etc.