1) Put air in your tires. If you have a bike, you can always bike in. It's not that hard; I did it for years just for fun. But dress warm and in layers and maybe walk your bike over the 59th Street bridge. Perfect excuse to wear play clothes to the office. More info on biking into the City here.
3) There are many ferries going from QNS to Manhattan. Whether you walk, bike, or get a ride to them, they're another option.
4) See if you can telecommute. I'm a huge fan of this option, but I know it's just not available to most.
5) Make sure to check the City's site on this. It's confusing, but better than nothing. There are maps for carpooling locations here. One of them is by Astoria Park at 19th Street & Hoyt Av.
I'll let you know if I have any other brilliant ideas. Likewise, okay? Good luck!
Addendum: JR just sent me this so, no busses.