I've only gotten three non-Lego products, two against my will.
The first was a giant castle for Saturnalia. It opened up, had a trap door, a lion, a bunch of cool stuff, but even back then I wouldn't play with it.
Then I bought one myself, but I was unaware that it was not Lego because it was a bootleg. It was of the little blue wizard cart and it looked exactly like the real thing but when I opened it up none of the pieces fit together right and they were all the wrong color. Weird.
And the third was this year, but I don't mind it that much. My girlfriend's mom got me a little model of Air Force One by BestLock or whatever. I don't mind that as much because it's just a little tiny model thatI would never use the parts for anything important anyway.