Get all your personal info from the computer, save any useful information from your email, clean your desk so that it takes less time to GTFOutta there - all well before the meeting. They will disable your account and access the minute you step into the room. The less time you spend packing under the sorrowful eyes of your colleagues, the better. That is, if they give you such an opportunity rather than escorting you straight out the door.
The decision has been made, you have very little chance of influencing it. Collect all your papers (COBRA, final paycheck, etc) and don't forget to speak your mind to HR during the exit interview if you get any. Don't be coy. They don't care, so you shouldn't either.
This helps a bit.
I was laid off during a massive, err, layoff. We knew the drill. I saw this happen three times earlier in the year.
The day before I was laid off, we got word this one was going to be big. So everyone packed up their personal stuff and organized any equipment or things owned by the company. Each department had a conference room of their own for the ordeal. Gave us a sympathetic speech, and said what to expect. We went downstairs where I had my laptop and BlackBerry ready to hand in. And they handed me a box of my personal stuff I already wrangled up the day before. Also got the schedule for the severance and vacation payouts.
We went to Dave and Busters to celebrate. The folks that weren't laid off had the day off.
The company was medium sized, but we all felt like it was very tight knit. It wasn't uncommon for everyday folks like me to be buddies with company officers.
It felt like a big party ended, or a family splitting up to relocate. Very emotional. After the daytime party ended at d&b, we went to Fox Sports Bar and Grill (no longer there) at night. Most of the company officers showed up to buy us drinks and reminisce of good times.
1)Separate your personal stuff on your desk. Take the bigger stuff with you after hours.
2)Remove personal data from company computers, laptops, phones. Throw them on a flash drive.
3)Don't be afraid to ask for references. I got a boatload of references from folks even outside my department.
Do everything with discretion. Don't make a scene. Try to make it look like you aren't expected to be laid off.
I did my packing after hours. My boss was the one that had to gather everyone's stuff. I didn't want make her work any harder than it was.