If you have an idea for what I should do for my 3k post blog (please nothing illegal, related to sex/alcohol/drugs), post it in a reply because I really need more ideas.
Do a live "Ask me Anything" stream while naked, drunk, and under the influence of various other illegal substances. Also strippers.
Seriously though, I'm not sure what you should do. I actually have an idea for my 3000th post though, but it's rather specific and a surprise. :p