I got this sometime in the early 80s (pre-Starbots) and thoroughly enjoy it. You drop Tony in a 2-liter bottle of water, and when you squeeze the sides, he dives. Granted, the 2-liter bottle is not the nicest venue for Tony, as it has an unsightly cap at the top and all sorts of unsightliness at the bottom, but watching Tony go up and down in the water is tons of fun. I recently scored one off Ebay and recorded a short video on it. Not only did I love making Tony dive once again, but so did my daughter (though she calls him Daniel the Diving Tiger).
In the 1970s ecology was all the rage and almost every spokes-creature, monarch and clown was trying to pass the message along. I was never a Litterbird of course, but I do remember seeing people toss huge wads of trash out the windows of moving cars. So much freedom in those days you could almost choke on it.
As a kid I was a very big fan of C-3PO’s cereal. I gobbled up the stuff during its way too short run and I collected each mask and carefully cut each one out. I then proceeded to wreck them by wearing them around the house for days on end. I might not own the masks anymore, but I can remember the magic of these Star Wars Collectibles, thanks to some wonderful uploads by the prolific Jason Liebig. He has posted not one or two, but four of the six collectible masks on his Flickr page. If you go to the largest file size, you can even print them, cut them out and eat your favorite non-droid theme cereal as your favorite Star Wars character.