Before I put anything here, I'm gonna say right now:
1. I don't have very many hacks, because I don't have any ideas
2. They aren't very good hacks

Now as of now, I have 3 hacks, they're not the best, in fact, they're not good.

Y'know what they're terrible, but I'm putting them here anyway!

1. Koopas! Plus Super Mario World Recolors!

Pretty much, just imagine that, but the shells are red, blue, and yellow.
Yeah, not exactly the best....
http://www.mediafire.com/?fb1evetdca8vqtp <- DOWNLOAD!

2. King Koopa! Form the Mario Cartoons!

This one's a little bit better, but due to me not being able to vertex, his hair isn't a crown like I wanted it.
http://www.mediafire.com/?6butj3139bdauxb <- DOWNLOAD

And finally:
3. SSBM Classic Luigi!

Remember that costume in SSBM that Luigi had that looked like his costume from the original Super Mario Bros?
Well, I was playing SSBM the other day and realized, I don't think there is a recolor of that so I made it. But it has a hint of Brawl in it. (By that I mean that he has Brawl skin colored gloves instead of the Melee skin colored gloves.) I know that I'm really stupid for not using the Melee Luigi for this color, but I don't care.
http://forums.kc-mm.com/Gallery/BrawlView.php?Number=17532 <- DOWNLOAD!

OH YEAH!
If you have something you want suggest it, I'll attempt it, most likely fail, BUT if I can do it, then I will submit it.