I remember my friend claiming that Mewtwo was in Melee and I thought he was bullshitting me, so he invited me to his house to prove it.
Needless to say, my mind was blown.
I miss those days. The internet has forever ruined them. It'll never be the same.
Sometimes we get close with games like dark souls or Fez, but still, never anything like the mega man x hadouken was for me (I owned and beat the game for over a year and didn't know about it until a friend showed me.)
I remember years ago reading about how Disney got super upset about a dying kid getting a poster or something from a movie theater. Looks like that story was made up as I can't find it on the Internet anymore.
So it's very possible that Nintendo doesn't take everything back too I suppose. There's hope left for a unique Smash Bros. setup.
Worked at gamestop for 9 years, got tons of nintendo advertising merch (we were told to throw them away, I kept most of the cool ones.) I even got to keep a GBA system and display. The only things nintendo took back were the DS Download station games (and pokemon distributions) and the systems (save for the GBA they let me have). The system displays we were told to dispose of (I didn't work there when they finally took down the wii one, but I can find out if nintendo kept the stand/TV). My buddy still has the gamecube display (sans original gamecube). The controllers, as you can imagine, (one normal, one bongo) were damaged beyond repair.
I have every Zelda standee from wind waker through skyward sword. Tons of zelda posters, too. Mario galaxy standee as well.