Things you'll need:
1.) A computer
3.) A text editor (such as windows notepad)
4.) A flash drive or cd
Step 1: Start AutoHotkey
Characters := "abcdefghijklmnopqrstuvwxyz"
CharStr := ""
Random, Rand, 1, StrLen(Characters)
CharStr := CharStr . SubStr(Characters, Rand, 1)
send % RandChar()
paste it into your editor, then click "save as" then save it as "WhateverYouWant.ahk" it doesn't matter what you name it, but be sure it has the .ahk.
If you want a crazy mouse as well as a messed up keyboard click File>New then paste this in and save it as a .ahkv:
After you have made the script(s),save it, then right-click it and click "Compile Script" it will create a file called "WhateverYouNamedYourFile.exe"