I got a pretty cool dinosaur/cave man set when I was really little. Mountains & trees & caves. Played with that thing forever.
I remember getting my first Star Wars action figure - a Stormtrooper, because my parents had no idea who were the main characters in the movie, and there were a lot of Stormtroopers on the shelf. Still, I loved it. Great present.
I got a telescope when I was maybe 10 or 12. Four-inch reflector with sun & moon filters. I kept that thing for years and years until it fell apart in about 2000.