$1: Mega Millions ticket
$10: Two five dollar scratch offs
$100: Books
$1000: Depending on the company, now you can start looking into mutual funds. Personally, I would invest it in a nice vacation
$10000: This is firm mutual fund territory. Simple Vanguard index fund.
$100000: At this level I like real estate, but I've never made it this high so I can't really say. But I've been close enough that I've thought about it.
And any higher I am just blowing smoke because I have no real knowledge of monetary numbers that high.