Cheat client

Could anyone make something like a cheat client, as an example take the CMP(Classic Multiplayer) client WOM it had speed hack, fly hack and no clip . So ya could anyone of you awesome hackers make a cheat client for SSP or even SMP .
Note:
This could include these hax:
x-ray
noclip(if it's possible)
speedhack
flying
item adding(like : you enter item id and you get it example: *push a button* *box pops up* *you enter an item id like 1(stone)* and the item appears in your inventory)
So ya if you make this your awesome.

Install Too Many Items and Xray hacks into Mycraft. Bam, thats all you need.